Faits choquants qui stimuleront votre cerveau en seulement 20 minutes

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Prêt à être époustouflé en seulement 20 minutes ? Plongez dans des faits choquants qui vont sérieusement faire travailler votre cerveau ! Des mystères des naufrages plus terribles que le Titanic aux habitudes surprenantes des civilisations anciennes, vous serez étonné de tout ce qu'il y a à apprendre. Préparez-vous à impressionner vos amis avec vos nouvelles connaissances et à voir le monde sous un tout nouvel angle. Accrochez-vous, car ces faits stimulants pour le cerveau vont vous emmener dans une aventure incroyable !  Animation créée par Sympa. ---------------------------------------------------------------------------------------- Musique par Epidemic Sound https://www.epidemicsound.com   Pour ne rien perdre de Sympa, abonnez-vous!: https://goo.gl/6E4Xna​ ---------------------------------------------------------------------------------------- Nos réseaux sociaux : Facebook: https://www.facebook.com/sympasympacom/ Instagram: https://www.instagram.com/sympa.officiel/  Stock de fichiers (photos, vidéos et autres): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ----------------------------------------------------------------------------------------  Si tu en veux encore plus, fais un tour ici:  http://sympa-sympa.com

Transcript

00:00In the North-East of Thailand, a family of huge stone whales swim in the forest.

00:06They are part of a rock formation that is 75 million years old.

00:10A long time ago, this part of Thailand was nothing more than a desert.

00:14The movements of the earth's crust have pushed the gravel upwards to create these fascinating mountains.

00:19Accessible to anyone who wants to spend the day exploring the network of trails,

00:23this site is more and more popular with tourists.

00:27Once you have reached the back of one of the whales,

00:30and that you will look at the infinite sea of green stretching down, you will understand why.

00:35On the detour of these paths, you will find waterfalls, a wide variety of plants and exotic animals,

00:40and from the top of the hill, you can even see the neighboring country, Laos.

00:46The shapes look like those of the whales swimming together.

00:49No wonder this place is called the Three Whale Rock.

00:53What a wonderful way to see Thailand on the back of a giant stone whale.

00:57By digging in a Canadian mine in March 2011, a worker made an incredible discovery.

01:03He found a specimen of Nodosaur, almost perfectly preserved.

01:08This extinct dinosaur weighed about 1,360 kilograms and was 5.5 meters long.

01:14Although it is more than 110 million years old, the Nodosaur was so well preserved

01:19that you can clearly see the heavy shell and the scaly skin it covered.

01:24It took almost a year of meticulous work to clear the incredible find.

01:29The fossil was finally unveiled in a Canadian museum in 2017.

01:34Unexpectedly, the analysis of the skin revealed nuances that indicate that the Nodosaur

01:39was perhaps capable of camouflaging itself, like geckos and night butterflies of modern times.

01:44This is added to the spines and scales that already make it an assault tank.

01:48Still studied today, this Nodosaur could be one of the most important fossils

01:53that has been discovered for a long time.

01:55Its secrets could help us elucidate many other mysteries of the past.

02:00Voynich's manuscript is the most mysterious document in the world.

02:04Since its discovery in 1912, it remains a complete mystery to all those who study it.

02:10It is abundantly illustrated with strange images of extraterrestrial plants,

02:14unknown objects and zodiac symbols.

02:17But its most interesting aspect is its writing.

02:20The language used in the text is completely indecipherable.

02:24No one knows what it means, who wrote it, or where it was written.

02:29We don't even know if it was a real functional language or if it was created for this one text.

02:35The drawings of the different plants are just as fascinating.

02:38Most of the plants in the manuscript are identifiable as plants,

02:41but they do not correspond to any known species.

02:45In England, a linguistics professor claimed to have deciphered some of the symbols in the manuscript,

02:51but to this day we have not been able to find more information on this mysterious text.

02:56If you ever get the chance to go to Australia,

02:59don't forget to visit the mysterious craters of Queensland.

03:02Halfway between Bundaberg and Djin Djin is one of the most disturbing finds in Australia.

03:08In 1971, the site belonged to a farmer who cultivated zucchini and potatoes.

03:14As the farmer tried to expand his farm,

03:17he kept hitting large rocks in his fields as he worked.

03:21Looking closer at the rocks on his path,

03:24he found marine fossils and strange craters.

03:28The farmer passed on his findings to geology professors who began to study the formations.

03:34When geologists began to dig in the region,

03:37they discovered a huge layer of chalk and ochre that was covered with craters.

03:42There were 35 craters in total,

03:44and the age of the rock layer was estimated at about 25 million years.

03:49Scientists studying this mystery believe that hot springs,

03:52ancient oceanic activity and meteorites

03:55are responsible for the formation of these craters,

03:58and we would like to know the people who gave these cities the names Bundaberg and Djin Djin.

04:04The dental machine is a kind of old computer

04:07that still disconcerts scientists with its extraordinary design.

04:11About 2,000 years ago, a Greek ship sank off the island of Antikythera.

04:16The wreck was discovered in 1900,

04:18and divers recovered some of its old artefacts.

04:22When archaeologists began to sort the wreck's finds,

04:25they came across an object that didn't seem to correspond to anything known at the time.

04:30The wreck was old,

04:32but they found an incredible device that seemed to be far too advanced technologically.

04:37The machine operated like a calculator,

04:39allowing its user to track with astonishing precision

04:43the time, the movement of the stars, the eclipses, the phases of the Moon,

04:48and even a countdown for events such as the Olympic Games.

04:51This level of technology is almost impossible to explain for a wreck of ancient Greece.

04:57No mechanism even came close to such a machine before the 14th century,

05:02when clocks with gears began to be manufactured in Europe.

05:06How was such a device created so long ago,

05:101,400 years ahead of its time?

05:13The wreck of Antikythera and the loss of the calculator

05:16could it have delayed our technological development by several hundred years?

05:21Meanwhile, the mountains of the Caucasus, bordering the Black Sea,

05:24are one of the rare regions of Europe that has not been affected significantly by humans,

05:29even though the term Caucasian refers to most people with white skin.

05:34Archaeologists have found many ancient megalithic structures in the region.

05:39These structures, similar to houses, commonly known as dolmens,

05:43contain jewels, bronze tools, and various potteries.

05:47Archaeologists do not know who built them, nor why, nor for what purpose.

05:52The structures are either two stones held together by a large stone made up of roofs,

05:57or smaller stones stacked like a wall with a hole on one side.

06:02We even found stone caps to seal what was inside.

06:06What is even stranger with these formations,

06:09is that they are not only found in the Caucasus.

06:12They can be found all over the world, in Australia, South Korea,

06:15Colombia, Africa, and even in France.

06:19Their function remains unknown, which opens the way to multiple hypotheses.

06:24The discovery of the tomb of the first emperor of China in 1974 is well documented.

06:29Who could forget the discovery of 8,000 warriors in burnt earth protecting his entrance?

06:34Most of the statues are of warriors, each with a unique facial expression.

06:39There are even horses and chariots in burnt earth,

06:42just in case.

06:45What we do not know is that we have not yet entered certain areas of the tomb.

06:50In 2008, NASA asked itself an intriguing question.

06:53How do spiders build their webs in weightlessness?

06:57It sent two spiders to the International Space Station.

07:01The first was the main participant,

07:03and the second would replace the first in case it had a problem.

07:07However, things did not go as planned.

07:10The rescue spider managed to escape and paid a visit to its companion,

07:14which led to a certain disorder.

07:16They built webbed webs that interfered with each other.

07:20As if that were not enough, the flies supposed to serve them food

07:23began to reproduce faster than expected.

07:26Their larvae escaped their container and covered the window in front of the compartment.

07:30Very quickly, the spiders found themselves completely hidden behind the larvae.

07:34Although this first experiment did not go well,

07:37one of the researchers involved in its organization was still curious.

07:41In 2011, she had the opportunity to repeat the experiment.

07:45This time, she asked for the help of other researchers.

07:48They decided to send a different kind of spider into space

07:52and prepared four specimens,

07:54two for the ISS and two for Earth,

07:57in order to be able to compare the results.

07:59The goal was to expose the spiders to variable gravity conditions

08:03and observe their behavior.

08:05However, there was another twist in the story.

08:09At first, they thought they had four female spiders,

08:12but it turned out that two of them were males.

08:15Determining the sex of young spiders can be tricky,

08:18but fortunately, one male had already been sent into space

08:22while the other remained on Earth,

08:24which allowed them to collect precious data.

08:27The second experiment turned out to be fruitful.

08:30The spiders were inactive.

08:32They built and dismantled a star,

08:34and even without the help of gravity,

08:36they were weaving new ones.

08:38Three cameras were able to take thousands of photos,

08:40showing their intense work on the star.

08:43Interestingly, spiders seem to create stars

08:46much more symmetrical in space than on Earth.

08:49The center of the stars is closer to the middle,

08:52and, surprisingly, spiders do not always position their heads down,

08:56as they usually do on Earth.

08:59However, an important factor made all the difference.

09:02Light.

09:04When the spiders of the ISS had a light source,

09:08they weaved asymmetrical stars,

09:10similar to the ones we find here.

09:13Light played a crucial role in the orientation of the spiders.

09:16The lamps in the compartment were fixed at the top.

09:19If the lamps had been positioned differently,

09:22for example on the side,

09:24it would have been difficult to observe the effect of light

09:27on the symmetry of the stars.

09:29When the lamps were turned off,

09:31the spiders rested in random orientations on their web.

09:35However, once the lights were on,

09:37they oriented themselves to the opposite of the light source,

09:40that is, down.

09:42Thus, in the absence of gravity,

09:44light helped them to orient themselves.

09:46This discovery was unexpected,

09:48because spiders can generally build their web in the dark

09:52and effectively capture their prey, even without light.

09:55Wow, there is a hole at the bottom of the ocean.

09:58It would seem that the ocean is a leak.

10:01But it is not a leak as we might expect,

10:04where the water simply flows.

10:06It is rather a source,

10:08because the water flows inward and not outward.

10:11This unique leak is known as the Piti Oasis.

10:14It is a student named Brendan Phillip

10:16who discovered it by chance

10:18when he noticed that bubbles were rising to the surface.

10:21Normally, the presence of bubbles in the ocean

10:23indicates that there could be hydrothermal chimneys,

10:26which are hot spots where very interesting phenomena develop.

10:29These vents are in fact comparable to hot springs

10:32along the ocean floor.

10:34But instead of boiling at the bottom of the seas,

10:36they release a fluid overheated in the crust of our planet.

10:39When the sea water infiltrates these cracks

10:42and sinks into the crust,

10:44it comes into contact with the extremely hot mantle of our planet.

10:47The sea water is then carried to very high temperatures.

10:51Then, by rising to the surface,

10:53it transports dissolved gases and minerals.

10:56When the hot fluid spills out of the chimneys,

10:58it mixes with the surrounding sea water

11:00and cools down quickly.

11:02At a short distance from the chimney,

11:04the temperature can drop to a comfortable 20°C.

11:08Which is exactly, it seems,

11:10what some creatures appreciate.

11:13And there are real oddities that live in this darkness.

11:16Like ghostly fish,

11:18giant red-pointed tubiculars,

11:20and a unique type of shrimp with eyes on its back.

11:23Some of these creatures,

11:25like tubiculars and bacteria,

11:28depend on the chemical compounds and minerals released by the chimneys

11:31to survive in these difficult conditions.

11:34But in this case,

11:35the boiling water did not come from a hydrothermal chimney.

11:38It came from a source,

11:40and that's a little more worrying.

11:42The water from this reservoir must stay where it is.

11:45If too much of it escapes,

11:47it could have serious consequences,

11:49especially for the surrounding region.

11:52We can observe this unusual leak

11:54along the subduction zone of Cascadia,

11:56which is a huge fault

11:58off the northwest coast of the Pacific.

12:00It is a place where two large plates

12:02that form the earth's crust meet

12:04and slide against each other.

12:06The oasis water somehow acts

12:08like a lubricant between these plates.

12:10We can compare the fault zone

12:12to a pneumatic hockey table.

12:14When the fluid pressure is high,

12:16it is as if the air was activated.

12:18This means that the friction between the plates is reduced,

12:21which allows the latter to move.

12:24But if the fluid pressure is lower,

12:26the two plates can get stuck against each other,

12:29which leads to an accumulation of the constraint.

12:32So they feel bad.

12:34In the context of tectonic plates,

12:36the constraint is a pressure or a force

12:38capable of causing a deformation.

12:40And if this pressure starts to accumulate,

12:42at some point,

12:45when it is too strong,

12:47it can trigger earthquakes,

12:49and probably no less.

12:51For example, a release of the constraint

12:54in the subduction zone of Cascadia

12:56could lead to an earthquake

12:58of magnitude 9.

13:00For comparison,

13:01the largest earthquake ever recorded

13:03occurred in Chile in 1960,

13:06with a magnitude of 9.5.

13:08The damage was colossal.

13:10We hope that the water will remain in its reservoir

13:13and will continue to maintain the delicate balance

13:15between the tectonic plates.

13:17We have explored only 5% of the oceans.

13:20Who knows how many great things

13:22are still at the bottom,

13:24waiting to be discovered?

13:26Look, for example,

13:27these mysterious holes that scientists

13:29have discovered in the depths of the Atlantic Ocean,

13:32near the Azores.

13:33They are perfectly aligned

13:35and spaced about 10 cm,

13:37or even a few meters in some CAs.

13:40They look like punch holes

13:42left by a sewing machine.

13:44Some think these holes

13:45could have a biological origin.

13:47For example,

13:48some fish could have formed them

13:50by walking on the seabed.

13:52Others think that we are in the presence

13:54of a phenomenon of human origin,

13:56perhaps left by a studded tire.

13:58Of course, such holes are perfect

14:00to invent stories about creatures

14:02from other planets

14:03that could have created them.

14:05Or maybe even legendary monsters,

14:07like that of Loch Ness.

14:09It is difficult to explain

14:11the symmetry of these holes,

14:13but a specialist biologist

14:15from the depths has proposed

14:17a rather convincing explanation.

14:19According to him,

14:20it could be an animal

14:21digging under the sediments.

14:23And from time to time,

14:24he could create small chimneys

14:26just to have access

14:27to a circulation of clean water

14:29in his small terrier.

14:30There are lots of sediments

14:31around the openings of each hole,

14:33and he confirms the idea

14:34that something pushed the ground

14:35down below.

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