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00:00:00We use doorknobs every day, so it's right to be concerned about how many germs could be on them.
00:00:05However, they have made doorknobs out of brass partly for that reason.
00:00:10Brass provides an antimicrobial effect, eliminating the microorganisms that were
00:00:15hoping to start a colony on your doorknob. Your pants have that one-fifth pocket that's
00:00:20recognized as the small useless one. Originally, it was there to provide a safe place for your
00:00:26pocket watch, something that was necessary when first implemented in 1901. It then continued to
00:00:32remain for traditional purposes. However, it's still a great place to put your tic-tacs.
00:00:38You've probably mistaken those little rivets on your jeans as some form of fashion statement,
00:00:43similar to the small pocket. In fact, they're incredibly important. They are there to provide
00:00:49extra support for areas that withstand the most strenuous parts of your clothing,
00:00:53preventing them from embarrassingly falling apart. That little button at the end of your seatbelt
00:01:00seems like it's way out of place. In fact, it's there to ensure your buckle will always remain
00:01:05at the end, so you won't have to awkwardly fiddle with your seatbelt every time you put it on.
00:01:11You're in a new car or a rental, and the gauge tells you the gas is getting low. You don't know
00:01:16which side the fuel cap is on from the inside. It can cause unnecessary effort at the gas station.
00:01:22However, your fuel gauge has an arrow that reminds you which side to fill your gas tank up from.
00:01:29Some models of cars may also have a gas tank hose instead, with the hose pictured on the side that
00:01:35the cap is on. Hiking and walking through snow requires the best kind of footwear. The shoes,
00:01:42which are perfect for this, also have an extra eyelet for your lace to loop through.
00:01:47Looping your laces through the extra eyelets will give more support for your ankles
00:01:51and feet, and will provide more stability as you walk. But as you walk, blisters are also a
00:01:58concern. The sweat in your shoe creates friction between the feet and the shoe, which then helps
00:02:05create the blisters. Antiperspirant that you use for your armpits will help keep the feet from
00:02:10sweating. Just make sure you use the clear one. Cooking for people is always nice. However,
00:02:18sometimes the guests are late. Yep, we're all guilty of that sometimes, right? The extra
00:02:24drawer under your oven, where you've been keeping all of your spare pots and pans,
00:02:28was actually made to keep your food warm. Great for those who are late to the meal.
00:02:34Ever wondered how long that padlock could possibly last when it's outside, in the rainy
00:02:39weather, keeping your bike safe? It has a little hole at the bottom of it. It's there to drain
00:02:45water to avoid corrosion on the inside. It also serves to provide oil, further prolonging its use.
00:02:53That hole in the elevator door isn't there to check who's inside, so you can avoid sharing
00:02:58a ride with specific people. It's a keyhole in case it breaks down. Ketchup, sauce bottles,
00:03:05and all other condiments we love all have a stage when it's difficult to get the insides out.
00:03:11You try hitting it, shaking it, and poking things inside to encourage the tasty condiments to come
00:03:16out. Luckily, there is an easier way to do it. The label at the top suggests where to tap the bottle.
00:03:25The sauce will come out easier and smoother, allowing gravity to take the place of frustration.
00:03:32The purpose of wooden coat hangers is to help repel pesky insects and avoid fungal growth
00:03:38that eats away at your clothing, as it's made of cedar wood. It contains oils that have
00:03:43insecticidal and fungicidal properties and were used as far back as the ancient Egyptians,
00:03:50although they used it for other purposes. We've all been trained and tested at the art of typing
00:03:57and know the correct way to use a keyboard, but you may not have noticed that the F and J keys
00:04:03have a small ridge at the bottom. They're there to help you find your correct starting
00:04:08place with your fingers on the keyboard without having to look down. If you've been lucky enough
00:04:14to get the window seat on the plane, you would have noticed that little hole at the bottom of
00:04:19the window. It helps with the air pressure on the plane. The window itself is made from acrylic
00:04:24and isn't actually glass, which saves it from fogging up so you can see the scenery on your
00:04:30journey. Sandwich bread is not entirely real bread. Water can boil and freeze at the same time.
00:04:36Bananas are berries that grow in grass. Believe these or not, but let me ask you,
00:04:41did you know water can be wetter than it is in nature? Find out in this video.
00:04:47Bubble gum is usually pink because the first commercial gum made in 1928 was like that.
00:04:52Pink simply was the only color of the food dye available at the factory. The first chewing gum
00:04:58ever, though, probably appeared about 9000 years back. People chewed birch bark tar back then for
00:05:04its medicinal properties, for example, to fight fever. In fact, at different periods, people used
00:05:10to chew on lots of stuff. For instance, the ancient Mayans made gum out of chicle, a substance made
00:05:16from the sapodilla tree sap. They used it to fight hunger and quench thirst. And in North America,
00:05:22people chewed spruce tree resin, a habit which European settlers later picked up and turned
00:05:27into a commercial thing in the 1840s. You can't name a folder C-O-N on any version of Windows.
00:05:35This also applies to some other letter combinations, such as P-R-N, A-U-X, N-U-L, and others.
00:05:43It has to do with the operating system itself. It creates folders to store data in them.
00:05:48And if you create one of your own using one of these names, it will confuse the system.
00:05:54If you shuffle a deck of cards to get every possible combination, you'll spend billions upon
00:05:59billions upon billions of years just to get a third of the way there. Think about it. There are 52 cards
00:06:06in a regular deck, and the possible number of combinations without repeating is 8 times 10
00:06:12raised to the power of 67. Even if you shuffled the cards 100 times per second without repeating
00:06:19combinations, it will take you several hundreds of trillions of the times the universe has existed
00:06:24so far. Folding a simple sheet of paper 103 times will get you a stack 93 billion light-years thick,
00:06:34which is more than the size of the observable universe. But if you decide to check this on
00:06:38your own, you won't be able to fold it more than 12 times. And that would require a really big
00:06:44sheet of paper, too, as in almost a mile long. With a regular printing paper sheet, it would be
00:06:50even less, 7 times. In many supermarkets, you'll see two different bread sections, bread and bakery,
00:06:58and they do have different types of bread in them. The lighter, square, and most often cut in advance
00:07:05variety is called white pan bread, or sandwich bread, while the other is, well, just bread.
00:07:11The difference is that sandwich bread is made specifically to have stuff spread on it. It has a
00:07:16tougher texture, which allows the slice to not fall apart and go all crumbly when you put, say,
00:07:21peanut butter on it. It's also soft enough, letting you bite into your sandwich and not
00:07:26squeeze the contents out of the sides, turning your meal into a mighty mess. Finally, white pan
00:07:33bread lasts longer than regular bread because of the additives in it. They preserve the bread's
00:07:39texture for a week or so in your home, allowing you to enjoy your PB&Js for longer,
00:07:44while the traditional bread variety would likely go stale the next day.
00:07:50There's a state at which water can both be boiling and freezing. It's called a triple point,
00:07:55and it occurs when all three states of a substance, liquid, solid, and vapor, exist at all the same
00:08:02time without messing with each other. For water, the triple point happens just a tiny bit over
00:08:08the freezing temperature and at an atmospheric pressure of 0.006 atmospheres. The blue bird you
00:08:15see on the Twitter logo has an official name. It's Larry the Bird, and the creator of the
00:08:21social network named it after the former NBA basketball player Larry Bird from the Boston Celtics.
00:08:28If you've decided to save a few bucks by charging your smartphone less often,
00:08:33let me disappoint you. To charge a cell phone, you use teeny amounts of electricity.
00:08:38That's why the maximum amount of money you can save within a year is less than $1.
00:08:44Jeep is actually an abbreviation. Originally, it was called a GP, or a general purpose vehicle.
00:08:52It was only much later that it became a brand we know today.
00:08:57Bananas have a curved shape because they turn towards the sun. They're also not trees,
00:09:02but grass, by the way. The bunches grow downwards, but the fruit itself wants to
00:09:07get towards the sun, so it curves a bit up while it grows. Spandex, a fiber used for making sports
00:09:15clothing, got its name as an anagram of the word expands. If you were to watch every video on
00:09:22YouTube, you'd have to spend 1,000 years on that, and then about 1,000 times more because of all the
00:09:28new videos that would appear by then. You probably know that tomatoes are
00:09:34technically berries. Well, bananas, peppers, watermelons, and eggplants are too.
00:09:41There's a little open jar symbol on every cosmetics item packaging. It's called PAO,
00:09:47period after opening, and it tells you how long you can safely use the product after opening it.
00:09:53The jar is usually accompanied by a number with the letter M, which stands for months.
00:09:58Just make sure you remember exactly when you open the package so that you'll know when three,
00:10:03six, nine, or however many months indicated have passed.
00:10:08A phone jack often has several rings on it, each representing different components.
00:10:13One ring is for mono sound, two are for stereo, and the third one means your earphones have a
00:10:19microphone function built in. To know if an egg you boiled is fully cooked, just spin it on the
00:10:26countertop. If the egg spins steadily without immediately falling over, it's done. Instead
00:10:33of using good old water, firefighters extinguish fires with wet water. They add special wetting
00:10:39agents to it, chemicals that reduce the surface tension that regular water has.
00:10:45It helps the substance to soak into objects and spread everywhere much more easily.
00:10:51Your shower curtain sometimes gets a bit too clingy when you get into the shower
00:10:55trying to get clean. According to the shower curtain effect, the hot water lowers the air
00:11:01pressure behind the curtain. The higher, denser pressure outside the shower pushes the curtain
00:11:07in, making you feel like your shower curtain is out to get you. If you take a closer look
00:11:12at the regular garbage bag, you'll probably notice that the seam is inside out. In fact,
00:11:18you're not supposed to shake up the bag to open it. You gotta place the bag over a garbage can
00:11:23like a hat and then just push the middle of the bag down into the can. This way, the seam will end
00:11:29up where it should be, inside. If you ever had problems with popping chocolates from the box,
00:11:35look at those little holes around them. They're there to help you. If you push a hole right next
00:11:41to the candy, it'll jump out easily. The button on the top of your baseball cap is there purely
00:11:47for aesthetic purposes. By the way, this little thing has a name. Professionals call it a
00:11:52Squatcho. Its initial function was to hold the four panels of the cap together. As hat making
00:11:58improved, the panels stopped needing it to hold together, and Squatcho was removed. But hats
00:12:04didn't look the same without it. Soon after, the Squatcho returned due to popular demand.
00:12:11Originally, high-heeled shoes weren't intended for galas and proms. Back in the 10th century,
00:12:16horse riding was pretty tough with flat-soled shoes, and many riders' feet would constantly
00:12:21fall out of the stirrups. Higher heels helped deal with that problem. The grip was much firmer
00:12:27with them, and they grew in popularity. It wasn't long before they became a fashion accessory to
00:12:32match stylish outfits. Notable people wouldn't want to be seen without them. Riding a horse
00:12:37with fancy heels was the equivalent of owning a luxurious sports car. Even though heels were
00:12:43worn mainly by men at the start, ladies picked up on the iconic trend in the 17th century.
00:12:48It's been one of the biggest ever since.
00:12:52In ancient Rome, salt was so precious that people even called it white gold. With scorching heat
00:12:58and no fridges, its purpose was to preserve food, mainly meat and fish. As a bonus, it made
00:13:04everything tastier. Sal, which is salt in Latin, was used instead of money to pay salaries. Here
00:13:11is where the word salary originated. Rice is the oldest cultivated food in human history.
00:13:18Its origins as wild grass started in a small valley around 15,000 years ago in Southeast Asia.
00:13:26Today, it's served globally as a staple diet and popular ingredient to 3.5 billion people.
00:13:34It would be difficult to imagine a world without video calls you use through your phone, camera,
00:13:38or laptop. The technology has helped game-changing innovations like working from home.
00:13:44Still, video calls' original purpose is far from how we use them today.
00:13:49The technology was introduced to confirm if the coffee was still in a pot. In 1993,
00:13:55researchers at the University of Cambridge found it frustrating when they took a break
00:13:59to get a cup of coffee, only to find that the pot was empty. So, they invented a device to
00:14:05monitor it and hooked up a camera that provided their computer with a live stream of the coffee
00:14:10pot. Thanks to these researchers, we can work in pajamas now. We know Albert Einstein for
00:14:17various achievements, but there's something he co-invented that goes overlooked. Together with
00:14:23his student, he invented a modified refrigerator. It's not like the ones we use today. In the 1920s,
00:14:30fridges weren't quite as safe as they produced poisonous gases. He wanted to create a safer
00:14:35version that didn't require electricity, without moving parts, and only needed a heat source to
00:14:40operate. Unfortunately, there wasn't enough funding, so the project dried up. Later in the 1950s,
00:14:47electric fridges became popular. But in 2008, engineers from Oxford University revived this
00:14:52retro design. They're still working on it, but once they finish, the Einstein fridge will come
00:14:58in handy for rural areas without power and people who want to live off the grid.
00:15:03That random QWERTY design doesn't make things easier. In the 1870s, Christopher Scholz invented a layout that ensured
00:15:11typing was twice as fast. But with commonly used letters next to each other, it was a bit too fast,
00:15:17and the machines constantly jammed. So, he then developed the QWERTY design. It forced typists to
00:15:24adopt a pecking style. This way, they would search for a letter and slowly type with their index
00:15:29fingers. The keyboards remain unchanged even today, and people all over the world have somehow adapted
00:15:35to them. The plastic end of your shoelace is an aglet, and people have used it since ancient Rome.
00:15:44Sure thing, they had no plastic back then, so those aglets were made of stone, glass, or even metal.
00:15:50Extra wealthy people could accessorize their shoes with precious metals, like brass or silver.
00:15:56What came first, the TV or the remote control? The technology that functions in the remote is older by
00:16:03several decades. In 1898, Nikola Tesla created a machine to control mechanical devices with radio
00:16:10waves. Initially, he tried selling the idea of a radio waves device operating I.O. through remote
00:16:16control boats. But the potential buyers were not interested. He was way ahead of his time, as remote
00:16:23controls were finally used with televisions in 1956. As engineer Percy Spencer initially
00:16:30invented something brilliant in 1945, he was working on a new vacuum tube, the Magnetron,
00:16:36which was used with early radar systems. While working on the project, he found that the chocolate
00:16:41in his pocket had melted. Realizing the heating potential of the Magnetron, he used it on corn
00:16:46kernels, which turned into popcorn. Then he tried testing it with eggs, but things got a bit messy.
00:16:53So once the yolk was washed away, he built a metal box, keeping the energy within, and the first
00:16:59microwave oven was built. In 1733, a duke in England requested William Kent, an architect,
00:17:07to make a traveling device for his kids. William accepted and built the first ever stroller,
00:17:13but nobody had to push it. Instead of handles, it was built like a carriage and pulled by a goat
00:17:18or a small pony. Only a few were made as it was pricey. More than 100 years later, in 1848,
00:17:25the first stroller with push handles became available and more affordable.
00:17:31Police are often associated with doughnuts, and there is actually a reason why. During the 1950s
00:17:37in the USA, police officers that worked night shifts found it hard to locate anywhere open for
00:17:42a midnight snack. Doughnut shops at this time were family-owned. They were working hard throughout
00:17:48the night, providing fresh doughnuts for the coming day. The shops were vulnerable at night, becoming
00:17:52the perfect relationship. Nourishment for the police and extra protection for the shops.
00:17:59Popping bubble wrap is an excellent source of relaxation, and it's also helpful with delicate
00:18:04packages. In 1957, two engineers glued together two shower curtains, trapping the air bubbles between.
00:18:12This is how the first bubble wrap was made. The result they were looking for was a sort of
00:18:17textured wallpaper. Still, it didn't go well on the market. Sometime later, they tried to sell it as
00:18:23insulation for greenhouses, and once again, they failed. Everything changed in 1960 when IBM needed
00:18:30to ship delicate computer parts. The bubble wrap was perfect, and they continued to collaborate.
00:18:37Every time you receive a package in your mail, take a look at your box cutter. If it features
00:18:42some diagonal lines on the blade, you're in for a little design perk. Turns out that these are
00:18:47blades that snap off. Continuously cutting cardboard can dull the sharp edge of the blade.
00:18:52To help prevent the need to buy a brand new box cutter, the top segment along the next line can be
00:18:57broken off to reach a new sharp edge. To do this, check out the small hole at the base of the tool,
00:19:03sometimes called the blade snapper. The people that first came up with this brilliant invention
00:19:09were engineers inspired by the way chocolate bars are segmented. Hold on a minute. Don't throw away
00:19:14the cardboard package just yet. Most likely, you'll have some silica gel packets somewhere at
00:19:19the bottom of the box. Since this gel is basically a drawing tool, it gathers up the moisture out of
00:19:24its environment, so you can store these packets for further occasions. Whether you'll need to dry
00:19:29out your phone or some other electrical object, you can place them in a container next to the
00:19:34silica gel to reduce the damage. You don't have to be a mechanic to know when a standard car tire
00:19:40needs replacing, since they come equipped with a neat indicator. Take a closer look, and you'll
00:19:45see that treads within the tire are a bunch of rubber notches. When the treads are evened out
00:19:51with the perpendicular bars, it's a sign you need to book an appointment with your local car service.
00:19:56Since most likely the tires have lost most of their traction and may not be safe for driving
00:20:01any longer, the upper corners of a car windshield feature textured black dots melted into the glass
00:20:07edges. This neat add-on isn't there for design purposes. It's called Frit Glazing, which means
00:20:14that a special type of ceramic paint is added to the window for protecting its sealant from UV rays.
00:20:21It also conceals and creates a coarser surface for the adhesive used to set the window in place.
00:20:28Whenever you're up for a drive, check out if there's a small tab under your car's rearview
00:20:33mirror. Bet you didn't know it's there to help switch the mirror from daytime to nighttime views.
00:20:39It uses a prismatic glass technology to blur the reflection and reduce the glare of headlights
00:20:45behind you in traffic. People came up with these manually tilted mirrors in the 1930s,
00:20:51but they became standard somewhere in the 1970s. While you're in the car, check out the headrests,
00:20:57as you most likely don't know that they carry a little disguised purpose. Of course, they're
00:21:02adjustable to accommodate passengers of any height so that they get the proper support for their
00:21:06heads and necks. The hidden feature is that they are detachable and come with two very solid metal
00:21:12bars. Should you ever find yourself stuck in a car and need to make a fast getaway, these bars
00:21:19come in handy to crack out the car windows. So you're out for a drive and you're suddenly out of
00:21:24gas. What I'm about to describe sounds more like a meme than an actual situation bound to happen.
00:21:30But what if you're in such a hurry that you accidentally drive off with the gas nozzle
00:21:35still in the tank? Well, the nozzles have been designed to prevent any hazards from happening,
00:21:40rest assured. They feature a breakaway device that will allow the hose to separate when taken
00:21:45out with enough force. Initially designed in the early 20th century to be worn exclusively
00:21:51by basketball players, sneakers soon became one of those fashion fundamentals, similar to jeans
00:21:57and leather jackets. If you take a closer look at them, you'll see they have two extra holes on the
00:22:02side, similar to the shoelace holes. They're manufactured as such, not only to provide extra
00:22:07ventilation, but to allow people to get extra creative with their laces when wearing the shoes.
00:22:13Admit it, you've always thought that chopsticks are merged at the end for the sole purpose of
00:22:17keeping them together until you're ready to dig into your meal. That may or may not be the whole
00:22:22truth. Under a more detailed inspection, the wooden tools feature a square-shaped end. Chopsticks
00:22:28manufactured like this date back to an old Japanese traditional design, which can help with breaking
00:22:34the ends easily. The separated end can then be used as a resting block for the chopsticks to keep
00:22:40it more sanitized in hopes it can be used again, since they won't be touching the table or any other
00:22:45surface. Women's bikes have a special design which, surprisingly, has a historical and fashionable
00:22:52purpose. The lower frame is for the most part meant to make up for the generally shorter height of
00:22:57ladies compared to that of the average gentleman. While that is the case for handlebars and saddles,
00:23:03the overall frame is lower for an additional purpose. Way back when women wore long skirts
00:23:09and dresses all day, every day they needed to make sure their outfits wouldn't get caught in the frame.
00:23:14That's how we came up with a lower-framed bicycle, perfectly made for women and their needs at the
00:23:20time. The fact that toothpastes are multi-colored is not just a nice perk to make dental hygiene
00:23:26more fun. There's a secret meaning related to each of the colors, which dates back to the 1970s.
00:23:33In those days, people grew more and more interested in their oral health care, and as such, they were
00:23:39looking for products which could do more than merely clean their teeth. One company was the
00:23:44pioneer in that regard, adding mouthwash to its toothpaste, meaning the blue strip. They later
00:23:49added on the red strip, meant to feature ingredients which helped with gum care.
00:23:55Speaking of toothpaste, check the cap next time you open a new tube. You may be in for a little
00:24:00surprise. There's a pointed cone shape inside the cap, so you can puncture the seal of the toothpaste
00:24:05without cutting yourself or ruining your manicure. Not to mention, it's more hygienic since you won't
00:24:10be able to transfer germs or other bacteria into the product itself. So, you hungry, but not quite
00:24:18ready to eat a three-course meal just yet? How about some instant noodles instead? Ah, the water's
00:24:25boiled, your tummy's rumbling, but there's a problem. The Styrofoam cup's broken, and the noodles
00:24:30are exposed. Wait, is that a space at the bottom of the cup? Why? That space is for protecting the
00:24:37noodles. It's not the company trying to save money or anything. Notice how the ramen in cups is hardly
00:24:43ever broken, but the one in the packet comes out looking like a mess? This technique is called a
00:24:48middle suspension. The noodles are packed in tightly to stop them from getting crushed in the delivery
00:24:54truck. It's not just about the noodles looking nice and long. It also helps those tasty noodles
00:24:59soften more easily. Now, morning breath isn't the best. Luckily, there's an easy way to get rid of
00:25:06it. Yeah, it would've been easy to think that mouthwash was invented for, you know, watching
00:25:11your mouth. Well, mouthwash was originally invented and sold as a floor cleaner. It was sold to
00:25:18hospitals as an antiseptic for years. It never really took off. Some genius in marketing rebranded
00:25:24it as a mouthwash, and the rest is minty fresh history. So, after you've cleaned your teeth,
00:25:31just remember, rebranding can be pretty powerful. It's hard to imagine a world without the Internet
00:25:38these days. No streaming, no online games, or pictures of cute little kitties. Yeah, that's
00:25:43not what it was designed for, but who cares, right? The prototype Internet was called ARPANET,
00:25:50or the Advanced Research Projects Agency Network. This machine was very sensitive. To stop anyone
00:25:56from turning it off, some clever scientist stuck a piece of paper on it with these powerful words.
00:26:02This machine is a server. Do not power it down. It was written in red ink. Hey, nice touch!
00:26:09Having your professor scribbling in the margins of your notebook isn't exactly new.
00:26:14Except that margins weren't designed for that. They're rat protection. Back in the day,
00:26:19rats would nibble on paper all the time. So, if you wrote something on the edge of the paper,
00:26:25it ended up inside a hungry rat. A couple of well-placed lines stopped your best answers
00:26:30from getting eaten. Hey, I can't finish this pizza. Time to cover up those leftovers.
00:26:37Luckily, I have plenty of plastic wrap. A little tug, and the roll just jumped out. Prison break!
00:26:44If you look at the wrap's home, the long thin box, there's a special little feature that can
00:26:49help you. A cardboard tab on each end. Push them in, and the roll's not going anywhere. Strange
00:26:56that I've never seen them before. It's lunchtime. I'm feeling like a California roll today.
00:27:04Seaweed, rice, cucumber, avocado, and crab meat. Or is it? It's actually imitation crab meat.
00:27:11It's basically cheap white fish blended with sugar. The fish mixture is then heated and
00:27:17pressed into shape. Yummy! That's maybe why it's called the hot dog of the sea. Nah, I just made
00:27:24that up. Your microwave has a secret we've all seen but never paid attention to. That black
00:27:31mesh you see on the door is a Faraday cage. It stops the electromagnetic energy, or the microwaves,
00:27:38from escaping, and cooking you too. That's how it heats up your food so quickly. Every microwave has
00:27:45to have one, and they all vary in quality. This Faraday cage can even stop signals from your phone,
00:27:51which I guess is useful. Hey, you don't need your popcorn to stop popping in order to take a call,
00:27:56do you? Airplane mode's a bit easier though. Ever taken an IQ test and realized you're Einstein
00:28:04level smart? Me neither. The median IQ is only 100, plus there's very little evidence that Einstein
00:28:12ever even took the test. In the beginning, most people thought the tests were too vague to be
00:28:17helpful in any way. The test was designed for children who needed help with their studies.
00:28:22Later, they realized it could be adapted to identify intelligence.
00:28:26But it was never originally designed for that. Hey, never pop bubble wrap, you're missing out!
00:28:33And, you guessed it, it was never meant to be popped or used in the way we use it today.
00:28:39It was invented as a new textured wallpaper. By sealing two shower curtains together,
00:28:44they created the first bubbles. The idea never really took off, obviously. After failing as
00:28:50wallpaper, it discovered its true meaning in life. It could protect sensitive items.
00:28:56When the first computers were being shipped, bubble wrap was there to help.
00:29:00Imagine a house with bubble wrap wallpaper in every room. Best or worst thing ever. Hey,
00:29:06leave me a comment below. If you owned one of the biggest companies in the world,
00:29:11selling one of the most known products on the planet, how would you keep your company's secret
00:29:16a secret? The formula for Coca-Cola isn't patented. The first recipe was, but when they
00:29:23made changes, no patent ever went through. The secret formula is still only known by a few people
00:29:30at the company. Not only that, but not even Coca-Cola's rival wants the recipe. In 2006,
00:29:37a disgruntled employee tried to sell off the secret, but it didn't work.
00:29:42Hey, take a look at your brand new mattress. Do you see the Do Not Remove Under Penalty of Law
00:29:48tag? Wow, that thing looks pretty serious. Good news, though, the tags aren't meant for you.
00:29:54They're aimed at the mattress seller. A hundred years ago, mattress makers used to create the
00:29:59filling with basically anything. Animal hair, old hospital beds, or clothing. Then strict laws
00:30:06stopped old hospital beds from being used. Their mattresses were filled with germs.
00:30:12Now, on a rainy day, Play-Doh is something everyone can make at home. Mash up some flour,
00:30:18water, salt, food coloring, and wham! Any creative person is amused for hours. Cheap, clean,
00:30:25non-toxic, the perfect modeling clay. But it was never made for that. This stuff was originally
00:30:32for cleaning up walls in the 1930s. That's because people started going crazy for wallpaper,
00:30:38which you couldn't use soap and water on. Eventually, Play-Doh had to find a new home.
00:30:44Now, have you ever finished a lollipop and noticed a hole in the stick? This hole isn't
00:30:49just for show, or to make a musical instrument with after you're done. It's there to keep that
00:30:55tasty sweet treat from falling off. While the candy's still hot, it's poured into a mold.
00:31:01As it hardens, the candy flows into the hole and creates an anchor.
00:31:06Oh, not into lollipops? How about good old American gummy bears? Unfortunately,
00:31:11they aren't American at all. They're German! A German company started making them in 1922.
00:31:18The original name was Gummy something something. Anyway, they got the inspiration from real
00:31:24dancing bears at live shows. These treats eventually made it all the way around the world.
00:31:31Hey, ever wondered what those little bumps were for on the F and J keys on your keyboard?
00:31:36These little raised ridges are to help your index fingers be in the best possible spot
00:31:41for lightning-fast typing. Keeping those fingers on F and J, it makes it way easier to reach all
00:31:47the keys, especially if you don't look at the keyboard. Now, everybody loves a Slinky. If
00:31:53you've ever watched one of them strut down the stairs with groovy music in the background,
00:31:58congrats, you're definitely a YouTube fan! People of all ages loved it when it came out.
00:32:04It was just crazy because it was never meant to be a toy at all. It's a spring! It was originally
00:32:10designed to stabilize sensitive nautical devices on ships. Nothing fun about that at all. Until
00:32:17that amazing day when one of them fell off a table and danced its way into our hearts.
00:32:23After many experiments, the new and improved Slinky was born. Give that team of scientists
00:32:28a medal. The expiration date on mineral water isn't about water going bad. Actually, no water
00:32:34can spoil, but the bottle can. Over time, it starts leaking some chemicals that aren't quite safe.
00:32:41The spike in the cap of a tube of ointment or cream is there so you can puncture the tiny foil
00:32:46seal. No need to grab a toothpick or try to use your fingernails to peel it off.
00:32:51Post-it notes are supposed to be peeled off from the side, like you're turning the page in a book.
00:32:56Most of us tear them from the bottom, and that just creates a crease and makes the whole note
00:33:01less sticky. To prevent water from boiling over, just lay a wooden spoon across the rim of the
00:33:07pot. It only works for a little while though. If the spoon's surface gets heated up to the boiling
00:33:12point, the bubbles will just foam up and around it. That's why metal spoons won't do. They heat
00:33:18up too quickly. Some erasers have two colors and textures, not for pen ink versus pencil lead,
00:33:24but for different types of paper. You're supposed to use the blue side to remove pencil marks from
00:33:30heavy grades of paper. Most people use bobby pins upside down. The zigzagged part goes closer
00:33:37to your scalp. The texture keeps the hair and pin in place much better. And give your pins a spritz
00:33:43of hairspray before putting them in. They'll grip better. Ever notice the tiny second hole in the
00:33:48lid of your coffee travel mug or to-go cup? It's there to control how smoothly the liquid flows
00:33:54out from the drink hole. Without it, the hot stuff would just glug out at you like milk from a jug.
00:33:59It also lets the steam escape so the high temperature and built-up pressure
00:34:03don't melt the lid or send it shooting off. Microwavable instant rice loves to fall over
00:34:09in the microwave, if you're me, that is. And like me, you've probably struggled with keeping
00:34:15the package upright. As it turns out, the flaps that fold out from the bottom create a nice,
00:34:21sturdy base. Push them out and give it a try. Hey, why didn't I learn this in school?
00:34:28Has that half-finished 2-liter bottle of soda left over from pizza night gone flat? Rather
00:34:34than pouring it down the drain, add it to your compost heap. The sugar feeds good microorganisms
00:34:40and increases the acidity of the pile, helping organic material break down faster.
00:34:46Any pair of scissors will go blunt sooner or later. But don't let that stop you. There's a
00:34:51product in your kitchen that can help bring them back to life fast. Aluminum foil isn't
00:34:57just for leftover lasagna. Fold a sheet of it into quarters and start cutting.
00:35:03Cutting through the foil will sharpen those scissors right up, but not if they're too blunt.
00:35:08Rescue them while there's still time! Those little escalator brushes aren't there to clean
00:35:13your shoes, even though they can do a rather good job. These bristles are actually a serious safety
00:35:19feature. Without them, clothes, shoelaces, and bags can get caught in them when they're too close to
00:35:25the sides. The little brushes are also there to tickle you, to remind you to look down and take
00:35:31care. Hey, I always thought it was a bug rubbing up against me!
00:35:36Half-belts. Seriously, what's up with those things? Well, some military jackets used to
00:35:42double as blankets, and the half-belt helped keep the extra material from getting in the
00:35:46soldier's way. Nowadays, they're mostly used as a fashion accessory. Accidentally stapling
00:35:52the wrong pages together is like the worst thing ever! Well, there are worse things,
00:35:57but it's certainly annoying. Especially if the staple takes out a huge piece of your document
00:36:02with it when you try to pry it off. There's actually a simple way to make sure that the
00:36:07stapler pins are less tight and easier to pull out. Take a close look at that metal plate at
00:36:13the front of your stapler, known as the anvil. Turn the stapler upside down and adjust the
00:36:19settings. You're basically changing the stapler setting to temporary. No more tears, no more tears.
00:36:26Mention my name and you'll get a good seat. Toilet seat covers have been used wrong for
00:36:31way too long. I see you ripping off that flap that looks like a tongue. No, you're doing it
00:36:37all wrong. Instead of tearing it off, let the flap sit in the bowl after you put it down the cover.
00:36:43When you flush, the suction will pull on the flap and take it away. Aren't you glad you know that
00:36:48now? That dark square or rectangle at the end of your toothpaste tube? What does that mean?
00:36:54Is it color-coded to show what ingredients are in there, or does it show whether the toothpaste's
00:36:59synthetic or natural? Well, sorry, but the truth isn't that exciting. The markings are there for
00:37:05the assembly machines. They help the machines know where to cut and fold each tube.
00:37:11We've all driven home from the supermarket, taken a right turn a little too hard, and
00:37:16CRASH! Sounds like the groceries volcano just erupted in the trunk.
00:37:21Look closely in the trunk. You might see some little hooks in there. You can hang your bags
00:37:26on them. Ooh. Yeah, some cars have them behind the front seats instead. You can use them to hang
00:37:32clothes or even your take-out bag. You may have noticed that members of the flight crew like to
00:37:39touch the overhead compartments while they're walking down the aisle. They don't have a weird
00:37:43desire to touch everything. There are actually handles along the edges to give them a better grip
00:37:49while walking. Go ahead and use them the next time you feel like a mid-air stroll. It's definitely
00:37:55better than grabbing onto everyone's headrests. Don't you hate that? A shiny brass doorknob adds
00:38:01just the right amount of fancy to your front door. But that's not all it does. Brass, like anything
00:38:07with copper alloy in it, has antimicrobial properties that many harmful germs and bacteria
00:38:13just can't stand. In high-traffic areas, these brass knobs and handles are the perfect way to
00:38:19get rid of those nasty germs without having to use harsh chemicals all the time. The only downside
00:38:26is that brass is a lot more expensive than other metals. That might be why it's hardly used for this
00:38:31anymore. Does your toothbrush have a pattern of blue bristles weaved in with the white ones?
00:38:37It makes the toothbrush look a lot more stylish. But it's not just about looking good. Those
00:38:43bristles actually have a practical purpose. The blue dye is designed to wear off around the same
00:38:49time as when you should replace your toothbrush. You should be switching out your toothbrush every
00:38:533-4 months anyway. But those blue bristles are there to give you a gentle nudge just in case
00:38:59you forget. You walk over them every day and never think about it twice. But is there a reason
00:39:06maintenance hole covers are always round? In past civilizations, like Ancient Rome,
00:39:12these covers used to be square-shaped slabs of stone. But all those edges and gaps led to plenty
00:39:18of stubbed toes and accidents for unsuspecting Romans. A round cover eliminated the problem.
00:39:24Plus, it meant you could only open it with a specialized tool. Probably a good idea.
00:39:30The thermos was invented by a Scottish scientist, but not for keeping his coffee warm. He just
00:39:36wanted to keep some chemicals at a stable temperature. He placed a small bottle inside
00:39:41of a larger one, and then sucked all the air out from between the two bottles.
00:39:46This same technique is used to make the modern thermos. You can find a pincushion in just about
00:39:51every household. And strangely, it's always in the shape of a tomato. Ever wondered about that
00:39:57little strawberry dangling from the top? I'm no biologist, but I'm quite sure that strawberries
00:40:04don't grow on tomatoes. That little thing's for the needle you're currently using, so you don't
00:40:09lose it in that big pile you have. Stick deodorants go to waste when the casing starts
00:40:15rubbing against your skin, but there's still plenty left in there. Here's an easy trick to
00:40:19get it out. Unscrew the bottom and push it up from underneath. That'll give you a few more days,
00:40:25at least. Next time you're getting ready for work, take a closer look at your go-to shirt.
00:40:32Every buttonhole is stitched vertically, but check out the very last hole. It's stitched
00:40:37horizontally, right? This is because the bottom part of your shirt endures the most stress from
00:40:42pulling, as it's where your hips are. So that horizontal buttonhole isn't a mistake, it's put
00:40:48there to stop your shirt ripping as your hips move. That layer of bubbles that forms when you
00:40:53add bubble bath to your tub isn't just for fun. The bubbly layer also acts as insulation and keeps
00:40:59your bath warmer for longer. The pom-pom on top of your beanie wasn't put there as a fashion
00:41:05accessory. The pom-pom was originally added to the hat to prevent sailors banging their heads
00:41:10on the ceilings of the ships that were too low. Crackers have holes in them to stop them cracking
00:41:16and breaking during baking. If the holes weren't there, steam would build up inside the cracker and
00:41:21make it collapse. Those numbers on stickers they put on oranges aren't random. If there are 4
00:41:28digits, and the first is 3 or 4, this means the fruit has been made with conventional farming
00:41:33techniques. 5 numbers beginning with an 8 means the fruit has been genetically modified. 5 numbers
00:41:40beginning with a 9 means the fruit is organic. Margins on paper aren't for writing in dates and
00:41:46numbering lists. They were originally added to serve a protective function. Back in the day,
00:41:52rats used to be a pesky problem in people's homes, and paper was one of their favorite snacks.
00:41:57Margins were added as a safeguard so that the rats would nibble on blank paper rather than
00:42:02taking a bite out of your important work. If you put your Chinese take-out on a plate when
00:42:08it arrives, you're doing more work than you should. Much like the paper condiment pots in
00:42:13fast-food restaurants, your cardboard Chinese take-out box can be unfolded to create the perfect
00:42:19size plate for your food. The long neck on your soda bottle is designed like that to encourage you
00:42:24to hold it there. That way, the heat from your hand will only warm that top bit of the bottle
00:42:30instead of heating up your whole drink. 6. Why does a lapel have a buttonhole with
00:42:36no matching button? Originally, coats and jackets did have a corresponding button
00:42:41so that the wearer could turn up the collar and fasten it around the neck to keep warm.
00:42:45Over time, people stopped doing this, and the button was removed. But many suitmakers still
00:42:50keep the non-functioning traditional buttonhole. 7. It's always hard to see your food in the
00:42:56microwave because of that pesky black grate on the window, but it's there to stop harmful
00:43:01microwaves escaping. Called the Faraday shield, it protects you as well as ensures that your food
00:43:07cooks properly. 8. That random diamond on your backpack is called a lash tab or pig snout. It's
00:43:14there so you can thread cords through the holes to carry extra gear. Perfect for camping or long
00:43:19hikes. 9. Golf balls are covered in dimples, rather than being perfectly round, so that the ball can
00:43:25fly through the air more smoothly, decreasing the drag and allowing it to travel further and faster.
00:43:32Your makeup pads have two different sides for a reason. The bumpy side is used for applying makeup,
00:43:37while the flat side is for removing it. 10. Donuts have holes so that the inside
00:43:43and outside cook evenly. Before the holes were added, the inside would often be greasy and doughy
00:43:49while the outside was crisp. 11. Your Apple laptop charger has tiny legs that can be folded out,
00:43:55and they're not there so your charger can stand up. These legs, when unfolded, allow you to wrap
00:44:01the cable around and then clamp it into place, securing it and preventing the cable getting
00:44:06tangled or damaged. 12. Take a look at a soda bottle, and you'll notice a disc inside the
00:44:11bottle cap. This helps seal in the liquid and the drink's fizz, stopping it from going flat.
00:44:18That hole in your hollow lollipop stick isn't to prevent choking, should it ever be swallowed.
00:44:23It's actually there to keep the candy in place. Excess candy flows into the hollow tube,
00:44:28and the hole, which, when it hardens, keeps the pop in place. If it was a smooth stick,
00:44:34the candy would slide off easily. 13. The zipper on leather biker jackets is
00:44:39often sewn diagonally. It's not just a fashion statement. Zips that are stitched vertically can
00:44:45bunch up if the wearer leans forward, but a diagonal zipper won't. That little triangle
00:44:50on your gas gauge is there to let you know which side of the car your gas cap is on.
00:44:56Now you'll never pull up to the wrong side of the pump in a rental car again!
00:45:0014. Vacuums come with so many attachments, but do any of us really know what that one
00:45:06with long bristles is for? It's for dusting and is perfect for cleaning framed art,
00:45:11blinds, and lampshades. 15. Those tiny holes in the chocolate
00:45:15box tray actually serve a function. Push the hole near the candy, and it'll pop straight out with
00:45:21you having to get your hands dirty. How thoughtful! 16. Some skyscrapers have hollow floors that can
00:45:27contain nothing but an elevator. It's actually a way to get around height limits. Some skyscrapers
00:45:33are given a limit to the number of floors they can have. Because the hollow floors are empty,
00:45:37they add to the height of the building and make it look more impressive without increasing the
00:45:42number of floors and breaking the building contract. These hollow floors also help to
00:45:46prevent the spread of fires. 17. Women's shirt buttons are
00:45:51traditionally on the left for a reason. Back in the day, it was a sign of wealth, as it signified
00:45:57that a chambermaid had dressed you, as having the buttons on the left made it easier for them to do
00:46:02up the shirt. 18. Your cuticles serve a purpose,
00:46:06so think before you get rid of them. The small area of skin is there to protect your nails from
00:46:10infection. Without it, bacteria and fungi can get in. 19. Road and construction workers are usually
00:46:18dressed in orange because the bright orange hue is visible even in bad weather. It's the most
00:46:23effective color to attract attention and alert people. No wonder lots of safety jackets and
00:46:28traffic cones are orange as well. 20. The stop sign has an eight-sided shape
00:46:33to help drivers recognize it easily, even if they see it from the back. And when the signs weren't
00:46:38reflective yet, the octagon shape prevented drivers from confusing the stop sign with any
00:46:43other at night. 21. The rumble strips on the side of the road are placed there to alert drivers who
00:46:48doze off behind the wheel. When their tires move over these strips, the noise and vibration work
00:46:54like an alarm clock. 22. There are magnetic locks on fuel hoses at gas stations. They come in handy
00:47:00if someone drives away with the gas nozzle still attached to their car. In this case, the lock
00:47:05detaches the hose automatically. Oh, that's embarrassing. 23. Gasoline looks like a rainbow
00:47:10in a puddle because it can't mix with water. It forms a thin membrane over it. When light
00:47:16reflects from it and the water at the same time, you've got a rainbow. 24. A triple handle on a
00:47:22jerry can is there to make it easier for two people to carry it and distribute fuel evenly.
00:47:28Gas cans often have a second hole that actually needs to be uncapped too before you pour the gas.
00:47:33The air passage will prevent it from pouring out, so no more fuel waste.
00:47:39Most gas cans have two holes with caps, a bigger and a smaller one. You're supposed to uncap the
00:47:44smaller hole before pouring gas inside the bigger one. It'll prevent the liquid from glugging and
00:47:50spilling all over your clothes and the ground. Another little thingy we often neglect is a point
00:47:55on an ointment cap. Most tubes are usually sealed with a plastic film or a foil, and opening it with
00:48:01your fingernails isn't the best idea. A point easily opens even the most safely sealed tube.
00:48:08You can use most screwdrivers together with a wrench to create more torque.
00:48:13Just place the wrench over the handle of the screwdriver. This way, you'll need to apply a
00:48:18lot less force than before. You'll also be able to get to hard-to-reach areas more easily. They
00:48:25install cameras in shops, banks, and hospitals to monitor everything. If something happens, you can
00:48:31call the police or rescuers. The camera really helps to solve a lot of problems. Why are there
00:48:36no cameras on planes? The crew keep order on the plane, but they won't be able to do anything if
00:48:42something serious happens. Besides, there's nowhere to run on the plane. During the flight, the cameras
00:48:49are useless, and after the flight, the words of the passengers work ideally instead of cameras. So, if
00:48:55cameras do no good, then why spend money on them? Water is great at cleaning stuff because it has
00:49:01triangular molecules. They're made of one oxygen and two hydrogen atoms. Um, H2O? Such molecules have
00:49:09slightly different charges on their opposite sides, pretty much like magnets. That's why water
00:49:14easily sticks to other molecules, including those that make up dirt. Lots of private houses have
00:49:19triangular-shaped roofs because this allows rain, snow, and fallen leaves to slide off the slope.
00:49:25If all this stuff piled up on top of your house, one day your roof would collapse. When a storm is
00:49:32coming, clouds seem to turn dark, but it's just an illusion. Thin clouds on a sunny day let the
00:49:38light through easily. They also scatter all the colors of the light spectrum. This makes us perceive
00:49:43the clouds as white, but the thicker the clouds are and the more water droplets they contain,
00:49:49the less light they let through and the darker they look. A good doorknob is the one made of
00:49:54brass, bronze, or some copper alloys. These metals have an anti-germ effect. Bacteria spread way
00:50:02slower on them. They also get rid of germs pretty fast, within a couple of hours. Nope, it doesn't
00:50:08mean you don't have to wash your hands. Diamonds have such symmetrical shape to show you their
00:50:13brilliance. Initially, the gems aren't so beautiful. They go through several stages of cutting and then
00:50:20become pieces of elegance. Most of these stones have a round shape with slightly pointed corners.
00:50:26Diamonds shine the brightest in this shape. Why are there two holes in the socket? The left hole
00:50:33is neutral, the right hole is not, and the gap underneath is ground. Electricity needs to flow
00:50:39through the chain. The current flows from the hot slot, passes through your phone charger, for example,
00:50:45and then goes through the neutral hole. Ever wondered what that small pocket on your jeans
00:50:50is for? People used to wear watches on chains. That small pocket was meant for it. Now, almost
00:50:57no one wears such a watch, but the pocket remains. You can still keep something small in there like a
00:51:02ring. In London, there are some poles that look like street lamps, but there are no bulbs. Well,
00:51:09their official name is stink pipes, and they're a thing of the past now, but they used to come in
00:51:14handy back in the 19th century. These hollow poles would vent away the air and explosive gases with
00:51:20bad smells to prevent, shall we say, unwanted consequences. Most kitchen shears have metal
00:51:27plier-like teeth in the middle. Between the handle grips, they can help you crack nuts, crab shells,
00:51:32and other tough products. You can also open jars and bottles or remove herb stems with their help.
00:51:39So, grocery carts have loops for a reason. You don't want to put your jacket in your cart next
00:51:44to a bunch of potatoes and onions, do you? Hang it on the loop instead. It's there to help you
00:51:50organize your cart better. Carts also have a cool section at the bottom. Whenever your cart's full,
00:51:56just lift it up and attach a shopping basket for extra purchases. Lift up the whole metal thing,
00:52:02sit your basket on the horizontal bar above the wheels, and secure it with those handy hooks.
00:52:09If you've got some pesky parsley stuck in your teeth, try this tip. It can be hard to get it
00:52:14all out with loose floss. You need more tension. Just tie it in a knot.
00:52:20Toothpaste stripes may seem a bit weird. It's just a marketing trick. Back in the 70s,
00:52:26a leading toothpaste brand added a blue stripe to show that their toothpaste had double action.
00:52:32Solid white toothpaste worked just as well. But those blue bristles on your toothbrush
00:52:38actually make sense. They gradually lose their color over time.
00:52:43When the blue's faded, it's time to change your toothbrush.
00:52:47Ever notice that tiny hole on the bottom of a padlock? Its hidden purpose is to drain water
00:52:53out to keep it from rusting. It's also the place to lubricate a padlock. A drop of oil in there
00:52:59will make it open and close way easier. Those ridges on the edge of dimes aren't
00:53:05just for show. People used to shave off the edges, then melt the edges down into new coins.
00:53:11But thanks to the new design, it's easy to tell if someone's been shaving the edges off.
00:53:18If you still struggle with peeling an orange, here's another way of opening it.
00:53:23First, cut off the top and bottom. Make a slit on the side and pull it open.
00:53:28That knobbly bit sticking out of the cap of your favorite cream is there for a reason.
00:53:33These tubes are usually sealed with foil. So unless you love breaking your nails trying to
00:53:39open them, just flip the cap over and push. The tiny rubber disc under every bottle cap
00:53:46isn't just for seeing if you want a lifetime supply of soda. It's what keeps your drink all
00:53:51nice and bubbly. The lid keeps the liquid inside. The rubber disc keeps the gas inside.
00:53:58Until you drink it. If you use the blue side of your eraser to erase pen,
00:54:04your notebooks are probably all full of holes. The blue side's there for when you need to erase
00:54:09something on much thicker paper. It works on pencil and even ink, as long as the paper's
00:54:15thick enough. Your bobby pins might not stay in place if the grooves aren't facing the right way.
00:54:22They should always be on the bottom, close to your head. Still coming loose? Put a squeeze
00:54:27of hairspray right onto the bobby pin before you put it in your hair. Many glass bottles
00:54:34have some sort of indent at the bottom. It's handy if you want to be fancy, put your thumb
00:54:40in the indent and pour away. The technical name for this little dude is a punt.
00:54:47Those sugar sticks at your local coffee stand are ready to be opened in a new and easier way.
00:54:53Look how happy they are! Try splitting it right down the middle. No more sugar on your fingers,
00:54:59no more tiny little paper bit – even your coffee's happier!
00:55:03Your cotton rounds pack has those strings on it, so you can hang it on a handy hook in the
00:55:08bathroom. But there's no need to loosen and tighten back up again every time.
00:55:14Check out the bottom of the pack – it has a perforated line. Tear it open carefully,
00:55:20and you're good to go! Doorknobs are usually made of brass,
00:55:24bronze, or some other copper alloy. Why? They're antibacterial, so they stop microbes from
00:55:30spreading. Just a couple of hours, and the pesky microbes are gone. But don't forget to
00:55:36wash your hands anyway! Bottles have long necks for a reason.
00:55:41Hold the neck, not the bottle, if you want to enjoy a cold drink. Two zips too much? Maybe.
00:55:49But they come in handy as a clever anti-theft device. Just lock them together. Now no one can
00:55:55open your backpack! Don't have a lock on you? You can also tie them together with some string,
00:56:01or even just a paperclip – anything to slow those pickpockets down.
00:56:06That tiny little button on the back of a shirt collar is used to hold your tie in place. You
00:56:12don't want your tie trying to escape back there. Shoe manufacturers care about their customers.
00:56:18Most running shoes now have a special anti-blister system, pre-installed. Sounds intense,
00:56:26but it's basically just that extra hole on top of your sneakers. Make a loop with the extra hole,
00:56:32inserting the lace backwards. Cross your laces and put them through the loops.
00:56:37Now pull the laces down to lock your foot in place. Now run!
00:56:43You'll find silica gel packets when you buy bags, shoes,
00:56:47even some snacks. Don't throw them away. They soak up excess moisture,
00:56:52so any times your shoes are a bit damp, chuck a few gel packets in there overnight.
00:56:59You might've been using your shampoo wrong this whole time. Really? Here's the gist. Don't apply
00:57:05it to your hair. Just apply it to the roots. The foam you create will trickle down on your hair
00:57:10anyway. Notebook margins aren't for taking extra notes or practicing emojis. They were
00:57:17invented to protect people's work. People used to live with a lot of hungry rats around. The rats
00:57:23would nibble at the paper, eating people's work. They put the margin lines there to let people
00:57:29know to start their writing further from the edge, so it's not lost to a hungry rodent.
00:57:35Solo cups are the key element for any BBQ party. But these red cups are even cooler than you
00:57:41thought. You can use them to measure liquids. The bottom line equals 1 oz, the second line
00:57:47equals 5 oz, and the third line equals 12 oz. You find yourself at a food fair in Iceland
00:57:54when you see it for the first time. Volcano bread. You eat a slice, and oddly enough,
00:58:00it actually tastes good. Unsure of how this works, you check out the baking process. Hmm.
00:58:08Is this kitchen really strange looking, or is it just me? The baking spot is in nature,
00:58:14specifically in a hot springs field. You better watch your step so you don't get burned by the
00:58:19hot vapor jolting from the ground. Now, a local baker shares their traditional rye bread recipe
00:58:26with you. Rye flour, check. Yeast, check. You mix it all together and pour it into a metal pot.
00:58:33Next on the list is digging the hole where you'll place the pot to bake.
00:58:38You dig for about 16 inches, until you can see the water bubbling from the ground.
00:58:43If you want to do it like a local, you'll use your finger to check the water temperature.
00:58:47Yikes, that's hot! Actually, the ground is heated by lava.
00:58:52Iceland is one of the most volcanic regions in the world, with over 30 active volcanoes at any
00:58:58one time. After you bury the bread in volcanic soil, you leave it there and wait 24 hours until
00:59:05it's ready. The next day, the bread is fully baked and super tasty. Ah, and the best part is,
00:59:12you just participated in an ancient Icelandic tradition. People have been doing this since at
00:59:18least the 1800s. Imagine it's your first day of work in a museum, and your assigned task is to
00:59:25clean the mask of Tutankhamen. You grab your cleaning utensils and then, oh no, this can't
00:59:31be happening! You just broke Tutankhamen's beard! I'd never wish this to happen to anyone, but this
00:59:37is actually a true story. Back in 2014, an employee at the Egyptian Museum knocked off the beard of
00:59:44Tutankhamen's mask and glued it back on, hoping no one would notice. This mask was discovered in
00:59:511922 and is considered one of the 10 symbols of our human civilization. Oh, and the best part of
00:59:58this story? It took historians until 2016 to discover the poor glue job. So, if you visited
01:00:04the museum between 2004 and 2016, maybe you saw the glued beard. If I say Sahara, what comes to
01:00:14mind? An infinite desert landscape, right? Well, according to scientists, the Sahara isn't always
01:00:21a desert. From time to time, it becomes green. But you probably won't be seeing this in your lifetime.
01:00:28Every 10,000 years, the Sahara lives through a humid period, where the sand gives way to lush
01:00:34green vegetation and sparkling lakes. This happens due to a tilt in the Earth's axis, which affects
01:00:41different weather patterns around the globe. Can you imagine the Sphinx surrounded by rainforest?
01:00:46It's mind-blowing! And speaking of the Sahara, say you traveled back to 1800 BCE. If you timed it
01:00:55right, you might get to see the construction of the so-called Black Pyramid in the city of Dashur.
01:01:01These are not the famous Giza pyramids, but they serve the similar purpose of being a final resting
01:01:06place. In 1892, archaeologists excavating the area found an important part of the Black Pyramid
01:01:14that was lost for centuries. The benben, also called a pyramidion, was the tip of ancient
01:01:19Egyptian pyramids. A benben consists of a solid block, usually made of limestone. Most of them
01:01:26were covered with gold and reflected the first rays of light from the sun every day. Hmm, can anyone
01:01:32get me a time machine please? Remember when you ate something really spicy, your cheeks turned red?
01:01:40Apparently, that can happen to birds too. For example, canaries can change colors after eating
01:01:46peppers. These birds have a special pigment that allows them to switch shades depending on their
01:01:51diet. So, if a yellow canary eats red peppers, it can turn orange or red. Can rocks move on the ground
01:01:59on their own? Well, you might be under that impression if you visit Racetrack Playa in
01:02:04California. The site is a dry lakebed and home to one of the world's strangest phenomenon,
01:02:10the so-called sailing stones. Think hundred-pound rocks moving around alone, leaving behind trails
01:02:16as long as 1,500 feet. They were discovered in the 1900s, and until recently, no one was lucky
01:02:22enough to be on the site while they were moving. It was only in 2014, after much observation and
01:02:29research, that scientists solved this mystery. The sailing stones appeared because of the perfect
01:02:35balance between wind, ice, and water. When it rains, the water that falls on the ground freezes
01:02:41and forms a coat of ice above the ground. If it's windy, the rocks are easily pushed around,
01:02:48sailing along the lakebed. But hey, if you ever visit Racetrack Playa, don't disturb the rocks!
01:02:55On the western coast of France, you'll find the vacation hotspot known as the Island of Ré.
01:03:01It attracts tourists looking for scenic landscapes and beautiful beaches, but that's not all it's
01:03:06famous for. There, an extraordinary phenomenon occurs when two different wave patterns collide
01:03:12with each other, something called a cross sea. It's almost as if the sea were a checkerboard
01:03:18divided into hundreds of squares. And no, it's not an optical illusion. A cross sea only happens
01:03:25in places where different quality waters meet. For a tourist to see the cross sea in Ré, this
01:03:31probably means that there was a storm in a different sea nearby. This stormy water travels
01:03:37with the help of currents and meets the water of Ré, creating these oddly shaped riptides.
01:03:43Oh, and apart from this island and Israel, there's nowhere else in the world where you could see such
01:03:48a thing. The following sight will either give you goosebumps or make you marvel at its weirdness.
01:03:55I'd say it depends on the time of day you visit. Next to the small town of Gryfina in Poland,
01:04:01you'll find a very unusual site, a pine tree forest where each tree is bent at its base.
01:04:08If you visit during the daytime, I guess you'll be fascinated by these trees' sharp 90-degree curves.
01:04:14You can even use their trunks as a stool if you decide to have a picnic, for example.
01:04:18But visiting the site at night will most likely give you chills.
01:04:23A thin layer of fog hovers around, making the forest seem quite unwelcoming. Scientists still
01:04:29can't explain why the trees are the way they are. So, are you a daytime or nighttime visitor?
01:04:37You went for a hike and suddenly encountered a big cloud of fog. This may ruin your photo ops,
01:04:43but there's one thing you can hope for. Foggy days are the perfect conditions for a phenomenon
01:04:48called fog bow, otherwise known as a white rainbow. We all know about these little pockets
01:04:54on jeans where people used to keep their pocket watches. But what about these small metal buttons?
01:04:59They help hold the fabric together. Weavers put the buttons where the jeans can tear during moving
01:05:05and straining. These small holes on some backpacks were designed to tie extra gear to them, so you
01:05:11can pass ropes through them and tie sneakers if you don't want to keep them inside your backpack
01:05:16or in your hands. This tiny dot next to the camera on your iPhone is a microphone. It helps to get
01:05:23good quality of sound while taking a video. The spotlight feature on your Mac can be used
01:05:29not only for a quick search of files and apps, it also works as a calculator. Just type in a
01:05:35mathematical problem you need to solve. Spotlight also uses internal dictionary data. Enter any word
01:05:42in the search bar and you can get information about it. You've just bought a new bottle of oil.
01:05:48You're taking off the lid and looking at this little cork that you can tear off by pulling
01:05:52the loop. Take this thing out, but don't throw it in the trash. Put it back in an upside-down position
01:05:59to control the pore's flow by pressing your finger against it. Tiny ridges on the F and J keys on the
01:06:06keyboard help your fingers navigate during touch typing. When your index fingers are on these ridges,
01:06:12you know exactly where other letters are. The brushes on the sides of the escalators are not
01:06:19for polishing your shoes, but for your safety. These nylon bristles prevent your laces and clothes
01:06:25from getting inside the escalator's gears. Now that wouldn't be good. Most door handles are made of
01:06:31brass. This type of metal is good for fighting microbes. Bacteria can't multiply that much on
01:06:38such surfaces. These public toilets cubicles don't look private for a reason. Huge gaps at the bottom
01:06:45were created to make you want to get out of there as soon as possible.
01:06:49Thanks to this design, there are almost no queues. You can use a plastic lid from soda cups as a
01:06:56coaster. It has the perfect shape to hold your drink and keep a table surface from getting wet.
01:07:01Don't turn the lid upside down. Just put it on the table the same way it was on the cup.
01:07:07If you're stuck in a car during an accident and can't open the doors,
01:07:11you can use bars from the detachable headrest to break the window and get out.
01:07:16Remember those small plastic discs under the bottle lids? This little thing helps preserve
01:07:22vacuum inside bottles, keeping soda in a fizzy state. You've probably watched food heating in
01:07:28a microwave at least once in your life. Exciting, I know! But why do the developers make the door
01:07:34so dark? This black film is necessary to block electromagnetic fields. Tiny dots on padlocks
01:07:42next to the keyhole are designed to dry out the moisture if water gets inside the lock. Also,
01:07:48if the lock gets jammed or starts to rust, you can pour oil into it through this hole to fix
01:07:54the problem. A golf ball is covered with tiny craters for good aerodynamics. They're called
01:08:01dimples, and this design helps the ball fly further and more evenly. Some mugs have a little
01:08:07groove at the outside of the bottom. It helps water flow out and prevents it from accumulating
01:08:13when the cup is in the dishwasher. Sunglasses were first used not to protect your eyes from the sun.
01:08:19They used such glasses during Arctic expeditions. A huge amount of snow can blind you just like a
01:08:25bright flash. To save their eyes, they came up with these unique glasses. You can use any T-shirt
01:08:32not only for dressing but also as a protective layer for your luggage. Just put your clothes
01:08:38on your suitcase as a cover and don't waste time plastic wrapping it. A button on the back of the
01:08:44shirt collar is there to keep your tie under the collar. Yes, people don't use it as intended
01:08:49because all ties are thinner now. But this button is still there as a decorative function.
01:08:55And here's the initial purpose of a tie. They created it in 17th-century Europe to tighten
01:09:01the collar. This way, people protected their necks from a strong wind. Then, they got used
01:09:07to this part of the outfit and made it a must-have accessory for royal gatherings.
01:09:13Soft pom-poms on hats were first invented several centuries ago. Sailors used them to
01:09:18avoid hitting their heads against low ship ceilings and ledges. They make most clothes
01:09:23hangers from cedarwood since it contains many natural oils repelling moths that love to eat
01:09:30your clothes. A light bulb is spherical because such a shape allows the light to distribute evenly.
01:09:37Also, such light bulbs are cheaper and easier to produce. Ever found these pieces of fabric in
01:09:43new clothes? They're not just patches but also testing subjects to use before washing. You can
01:09:49put this piece in the washing machine and see what happens to it. If everything is fine, then
01:09:55you can safely put your clothes in. Your ceiling fan has two modes of work – winter and summer.
01:10:01You need to find the switch on it. Push it up to activate the winter mode and down for the summer
01:10:07one. In summer mode, the fan pushes the air down. It pulls the air up in winter. Most people have
01:10:15this ground plunger in the bathroom. In movies, they use those to eliminate a blockage in the
01:10:20toilet. In fact, the plunger is to get rid of a blockage in the sink. For the toilet, you need
01:10:26another special device. The extra space under your oven is not for keeping pans and pots.
01:10:33You can put some dishes there. The heat of the stove will keep your meals warm.
01:10:38It's useful if you're waiting for friends late for dinner.
01:10:42That's it for today! So, hey, if you pacified your curiosity, then give the video a like and
01:10:46share it with your friends. Or if you want more, just click on these videos and stay on the Bright
01:10:51Side!