What Caused the Extinction of Giant Insects? | Full Documentary

[@domenicotrombetti8583]

Great documentary. I especially appreciated that it didn't shy away from illustrating the complexity of the situation and the interplay between different factors in the extinction of the giant insects. Too many documentaries nowadays opt for more oversimplified and sensationalistic narratives. Thanks.

[@melissasalasblair5273]

Exactly, love that....not "shy away" from the complexities. We're in this together.

[@ВиталийЛобачёв-ъ3ч]

Большое спасибо команде создателей такого фильма.

[@kamuisama]

Вот только создатели либо лгут, либо не заморачивались с фактами. С первых минут в фильме рассказывают откровенный наукообразный бред. Эффект Даннинга-Крюгера во всей красе.

[@Martin.Wilson]

Years ago, in university, I saw a fossil of a dragonfly with a wingspan of well over 4 feet. I don't think it was the largest specimen by any means, but still very impressive.

[@quoderatdemonstrandum5442]

Jeez Louise... What in the hell would a dragonfly that big eat? House cats?

[@fredamber8238]

@@quoderatdemonstrandum5442 other insects

[@subascosauce8288]

I’ve seen a few specimens at the Natural History Museum, London, the genus Meganeura, quite impressive indeed!

[@SudijaSERG]

​@@subascosauce8288 вам очень повезло, леди) Тоже очень хотелось бы увидеть нечто подобное. Но я из России, а Путин сделал всё, чтоб нас ненавидели во всём мире.

[@darkstranger82khlynin55]

​@@SudijaSERG Балабол

[@redplanet7163]

Wow...great graphics. Great narration too. I live in SE Queensland, Australia. Most of this looks like my back yard and general area - swamps, giant ferns, tall trees, bracken...everything minus the giant dragonflies...thankfully!

[@Hunt45]

😂😂😂😂

[@jaycampbell2975]

Whenever I see these videos and I think about the number of past years it absolutely blows my mind.

[@Clocental]

Ты главное на звёздное небо не гляди, а то там звёзд ещё больше. 😂

[@davidferrara1105]

I was hardly more than a boy at the time.

[@zgrad2008]

Да, с большой долей вероятности была другая продолжительность и года - 260 дней, а лунный месяц 20 дней. А вот сколько часов были сутки не вполне понятно, может и 32 часа.

[@Clocental]

@@zgrad2008 изначально 7 часов в сутках было.

[@zgrad2008]

@@Clocental Привет. А откуда взялась цифра 7 часов, если не секрет? Про 32 часа возникло предположение, потому что биологи изучали биоритмы человека, и у людей 24-часовые биоритмы, но есть люди с 32 часовыми биоритмами.

[@Pomelu]

Oxygen, there you go

[@rogerphillips4211]

LACK OF OXYGEN, DUMMY.

[@jamesdelatorre5829]

Thanks. Bye.

[@Biff11235]

I knew this and clicked video anyways haha

[@John77Doe]

Why couldn’t mankind survive with the high level of oxygen?? We give pure oxygen to people with Congestive Heart Failure!! 😃😃😃😃😃

[@BettyWhiteTheVibratorSlayer]

​@@John77Doe it's best to describe it as using jet fuel in a Honda civic, it'll run like a raped ape...until it burns out. The mix was too rich.

[@coyotemojo]

I think they are looking at the wrong space. There's no way early pterosaurs could compete with giant flying insects in the air. The pressure had to either happen in the nymph stage or perhaps at night when the insects were cold and sluggish. The meganeura went extinct too early to blame endotherms, but the rise of warm blooded animals could help explain the later extinctions.

[@startsevatori]

Спасибо за русскую озвучку❤

[@theonehappyorc1235]

Ничего не понял. А почему разноязычные комменты? Неужели многоязыковая озвучка какая-то в видео теперь бывает?

[@evenchel]

@@theonehappyorc1235 то же с недоумением смотрю на комментарии, может весь мир спешно изучает русский?))

[@theonehappyorc1235]

@@evenchel я так понимаю, что такое вот хитрое видео. в зависимости от страны включается соответствующий язык.

[@YasnaKo]

​@@theonehappyorc1235 новая фича Ютуба - разные звуковые дорожки для разных языков

[@dolphinsex7765]

@@YasnaKo как так? Разве видео уже не было выложено в русской озвучке?

[@horaciodortona574]

Excellent documentary that I think deserves more attention as insects were the dominant life forms then as they remain today...if only somewhat smaller.

[@peteralthoff6920]

Interesting that information is given about the increased oxygen content in the atmosphere, but not about the CO2 content. (Carbon 1000 ppm - today 415 ppm)

[@frankb3551]

I find it very hard to believe that the first gliding predators could adjust their direction quickly enough to catch very nimble flying insects which would have been able to adjust directions very quickly. It would have needed to be a surprise for them to catch these insects given their almost 360o vision. While the insect could easily increase their height from the ground the gliding reptile could only decrease its height except in cases of updrafts.

[@Clocental]

Then the air was paid than now and gravity was three times greater. Therefore, the air in the tissues of the body was supplied at such a pressure more easily.

[@wir-beide.]

7

[@andrewstrongman305]

Arthropleura was a giant herbivorous millipede, it had no venomous fangs like modern centipedes. That aside, the giant flying insects might have been able to adapt to lower oxygen levels, but when vertebrates were able to hunt them in the air, size became a disadvantage to survival.

[@АристархАристархов-о9л]

Наличие ядовитости или неядовитости по фрагментарным окаменелостям определить та ещё задача. Впрочем, может и не ядовитая. Крупному животному ядовитось вроде как и ни к чему. Лишняя она. Ядовитость. Вполне достаточно крупного размера, что бы одолеть добычу. Вот с чего бы доминанту по размеру переходить на растительноядность? А летающим насекомым в то время кто составил конкуренцию из позвоночных? Птерозавров ещё не случилось. Не было у них конкурентом кроме других насекомых. Не в позвоночных дело.

[@이이-n4z8y]

No, they couldn't have adsoted to lower o2, plus there were no predators at that time.

[@Clocental]

​@@이이-n4z8y дело вовсе не в количестве кислорода, а в давлении. Гравитация на Земле стала падать и их тела уже не могли усваивать кислород из воздуха. Поэтому они стали мелкими.

[@SmittyDealio]

Before watching, I can say with absolute confidence that whatever it was that caused it, we owe it a debt that can never be repaid. Thank you scientific event\chain of events.

[@АристархАристархов-о9л]

А как же права насекомых? Они протестуют! Гневно!

[@jessepollard7132]

The evolution of lungs. insects don't have any and cannot absorb enough to be any bigger than they are.

[@JMDinOKC]

I didn't know there was a dispute. In the Carboniferous period, the oxygen content of the atmosphere was about 35%. Insects, arachnids, and other arthropods without lungs could get larger because more oxygen could diffuse passively into their bodies through their tracheal orifices. When global geochemistry changed and more oxygen was bound into minerals and thus the oxygen content of the atmosphere fell, the giant bugs had to get smaller. No?

[@cratecruncher6687]

CGI makes or breaks paleontology documentaries and this show really delivered!

[@marchaelemeersch8653]

Belle émission. La recherche aborde a peu près tous les facteurs environnementaux ; mais au niveau de l' atmosphère il en est 1 qui n' est jamais abordé : celui de la pression . Or c' est un élément fondamental en termes de capacité de transfert dans les échanges gazeux.

[@Grow_YOW90]

I'm sure it wasn't an extinction, but rather a gradual loss of size.

[@dahjeekwenglee5909]

Could the same thing ever happen to mammals and humans now lol?

[@jelanwashington5521]

Evidence¿

[@BettyWhiteTheVibratorSlayer]

Larger species went extinct in favor of smaller species, the term fits, there are more modest changes besides size.

[@jelanwashington5521]

@@BettyWhiteTheVibratorSlayer what? you just said what the video said can you prove it?? there's also like a million issues w fossils

[@BettyWhiteTheVibratorSlayer]

@@jelanwashington5521 yes, tarantulas.

[@randallgillson7801]

Awesome Documentary! I enjoyed it, Keep up the great work.

[@ВиталийЛобачёв-ъ3ч]

Отличный фильм.😊👍 Мне лично нравится синяя стрекоза, они стайками живут у болотистых мест и у водоемов. Когда за ними наблюдаешь, очень красивое зрелище.

[@ЗабальзамированныйСвинтус]

Если бы такая гигантская стрикоза из палеозойской эры шмальнул бы в руку или в шею.Как думаю какой бы был по ощущениям укус и по степени боли?

[@yonisuqui]

​@@ЗабальзамированныйСвинтуссравнимо примерно с уколом иглой, достаточно больно

[@sedatmorkoc3897]

Çok küçüktüm 6 yaşında falan. Yusufçuk böceğini ilk gördüğümde çok korkmuştum, o an şöyle bir fikir geldi aklıma, dedim ki: bu hayvan sanki tarih öncesinden kalma bir canlı, milyonlarca yıldır türünü devam ettiyor olmalı diye düşünmüştüm.

[@АристархАристархов-о9л]

Ух ты! Испуг родил мысль. Мысль родила слово. Ну, небольшой поток слов. А если бы это была не стрекоза, а, к примеру, муха? Впечатлений бы на целый трактат многотомный хватило бы? Да?

[@mL87890]

@@АристархАристархов-о9л вы знаете этот язык?)

[@АристархАристархов-о9л]

@@mL87890 нет для нас с гуглом незнакомых языков)

[@Clocental]

​@@АристархАристархов-о9л писец они чудные эти иностранцы, читаю их комментарии и такое ощущение, что они дети. 😂 Радуются всякой фигне. 😂

[@АристархАристархов-о9л]

@@Clocental ) Ваша правда. Меня тоже они изрядно позабавили. Цивилизация, чё

[@sookie.smooth]

I’m truly impressed how many languages this has been translated into! I wish all videos here had that attention to detail!! 👍

[@debbieschultz9768]

This is one extinction I’m glad happened 😂 Great documentary. I love documentaries that you can learn from

[@leosaura1993]

You i agree with you there even knowing that they are no threat to humans they eat smal insect the fact facing that thing in RL i would run for a spray can and a zippo lighter right away.

[@deeppurple883]

They didn't all die out, I married one wing's and all. Followed me everywhere I went. She would swoop in while I was with mate's and take me away. She was more dragon than fly but she had her moment's to. 🏃‍♂️🕸️🕷️

[@liennitram9291]

What I'd give to be able to time travel. To go back and see these things would be awesome.

[@outdoorsythings2573]

yes truely, how ever im not a fan of being some bugs meal, watching is much safer. 😁

[@Clocental]

Там бы тебя и съели.

[@profile1234]

to see this dusgasting things ... u got to be kidding me 😂

[@Notki-dushi-1991]

​@@profile1234 вот вот. Тут маленькое насекомое, ну... Такое себе...а увидеть такую живность в три метра ну . На....

[@Thenogomogo-zo3un]

Yeah, love to bring some back and keep as pets

[@miskitty23]

I've so enjoyed this! Beautiful documentary!

[@kvinta]

замечательный фильм!

[@kamuisama]

А вас не смутило, что с первых минут авторы фильма мягко говоря ошибаются? Сказать, что "деревья накапливали углекислый газ и выделяли...", все равно что сказать "Вадим накапливает еду и выделяет...". Никаких доисторических птиц во времена гигантских насекомых не было еще и в проекте, предки птиц появились на сотню миллионов лет позднее.

[@heinrichkahlert4695]

incredible good and exciting documentation, very well done

[@sookie.smooth]

It’s interesting overall. I was a bit disappointed that the use of oxygen investigation only involved an X-ray. I was hoping they would set up an biosphere with lots of oxygen and see if the grasshoppers grew larger in each generation.

[@warrax111]

that could last like 1000 years, if you would see first changes.

[@sookie.smooth]

@@warrax111 ohhhh. Well that would be well past my bedtime. 😩 Thanks for answering! 😄

[@Clocental]

Достаточно смоделировать атмосферу с более плотным воздухом и посмотреть как будут питаться ткани насекомых. Я думаю результат бы их потряс.

[@jessepollard7132]

That was done with roaches - they did get bigger, but not that much bigger - they don't have lungs.

[@ИринаТиторова-я4ц]

Японцы такой опыт с золотыми рыбками проводили. В аквариум подавали большое количество кислорода и рыбки выросли в три раза больше обыкновенного размера.

[@feudorArt]

well done cameraman, he was not afraid to walk with a camera in such conditions

[@styre5249]

Awesome documentary. one question , why would humans not survive in 35% oxygen as stated at the beginning. Skylab had 75% O2 and before that they were running 100% O2 breathing atmosphere . It was reduced back to 21% to reduce the fire hazard pure O2 creates

[@evgeniyrusso3934]

Всё просто: "Внешняя длина комплекса «Скайлэб» с пристыкованным к ней кораблем «Аполлон» - 36 м, масса - 91,1 т. В жилых отсеках общим объёмом 352,4 м³ поддерживается искусственная кислородно-азотная атмосфера (26 % азота и 74 % кислорода) давлением 0,35 атм и температурой +21…+32 °C." Информация взята из Википедии. Таким образом, давление было всего лишь 1/3 от нормального, поэтому люди могли дышать газовой смесью с высоким процентным содержанием кислорода. Это было сделано для экономии, чтобы уменьшить количество бесполезного азота - каждый килограмм груза доставляемого на орбиту, стоит очень дорого.

[@Thenogomogo-zo3un]

Probably the world caught fire and burnt everyone. Pure O2 like the poor astronauts of Apollo 1 were breathing that caught fire. Good point though.

[@DiscoverLifebyHP]

Your channel is great! Thank you!😍

[@shaydorahl6740]

It's very simple, less oxygen and less atmospheric pressure, insects breathe through their exoskeletons. Surface area vs available oxygen whose effectiveness is increased/decreased based on atmospheric pressure determines rate of utilized oxygen.

[@hedleyclive]

Perhaps there were very big humanoids with very big fly swatters? (Just a thought...... )

[@alcapone9550]

kzbin.info/www/bejne/jJ_GipSpgK2NrKc This Austrian Klaus Dona gives lectures about the giant- bone-findings around the world. He organises also exhibitions sometimes in some cities. But most of his stuff is not in english.

[@fastvideos484]

they didn't go extinct it was just the oxygen levels that lowered leading to insects not needing small lungs and shrinking

[@ManicPandaz]

I dunno, I’m leaning more towards telekinetic toads 🤔

[@Thenogomogo-zo3un]

Humans came along and killed them all off with their prehistoric cars and stuff causing climate change and mass extinctions They say Humans are to blame at the end. Watch it again if you dont believe me

[@2msvalkyrie529]

10 feet !? ... 25 inches ?? ..Love it when they use Imperial measures.!! I know it's annoying for others but keep it up..! Top notch docu from our French cousins by the way...! Great narration too !

[@АлександрКулагин-э1ф]

11:25 мин- ,,очень странно что насекомые достигли таких размеров,, 11:45 мин-,, в каменноугольном периоде в атмосфере было намного больше кислорода,что позволяло насекомым быть больше,, У парня раздвоение личности:)

[@MrProstoj]

А ещё позже, уровень кислорода упал почти до современного уровня и они не потеряли в размере,мы не понимаем почему.))))

[@RolandusLuzus]

Great docu...thanks!

[@larrylaird-so5oy]

Great video and very well explained.

[@jelanwashington5521]

He doesn’t really explain much of anything other than hypothetical and theoretical physics

[@VictorFursov]

Best entomological greetings from Ukraine! Thank you for interesting video story about insects!

[@sotirpetrof7083]

Very good documentary.

[@jelanwashington5521]

How is this a documentary??? What actual FACT, EVIDENCE, and PROOF were provided in this video?

[@subascosauce8288]

@@jelanwashington5521 I’ve seen a few of your posts now, and I’m beginning to think….or my ThEORY is, that you don’t even know what a scientific theory means? I wonder! You ask for evidence etc, how much more do you want? the fossil record is just ONE part of the huge spectrum of evidence available in books, online, and peer reviewed scientific papers! Or do you think it’s all just a big conspiracy! Don’t forget this is just a basic beginners guide video, pretty well done to attract the masses and the kids!

[@jelanwashington5521]

@@subascosauce8288 if you really need me to explain all the issues w fossils I will

[@jelanwashington5521]

@@subascosauce8288 tell me exactly what other than fossils could possibly attempt to PROVE the theory, and my point in my other posts I’m pretty sure is that this video is suggestive and more than that manipulative just like you want to get KIDS to watch this crap. W all the stupid cgi and weird interactive cutscenes whenever actual evidence is due. Not only are they the only cling to the theory being valid, have you ever seen a fossil? You dug it out of the dirt w your own hands? Which makes no fckn sense btw especially the preservation of fossils like the ones in this video. Even if you had excavated a “fossil” from somewhere have you ever seen an excavation site??

[@larrygall5831]

Fascinating, but I'm glad they're not around any more.

[@lorettaescasia1861]

Unless buried in mud without any chance of escape, from huge amount of water to cover the land. Or you have other explanation to how something gets completely covered in mud and die.

[@Thenogomogo-zo3un]

Humans come along and bury them

[@The_Land_Of_Facts]

Amazing video 👍🤩 I really enjoyed

[@kundeleczek1]

French documents are soo different than US one.

[@АристархАристархов-о9л]

Viva France, чё

[@YasnaKo]

​@@АристархАристархов-о9л тоже на ютубе социализируетесь?)

[@Edsshed]

It's not complicated, they didn't dissappear they just shrunk in size, due to the changes in gravity. Let me explain, every year the earth increases in size by 0.1 mm per year multiply that by 350 million and you get 3500 meters. The earth's current radius is 6371km. If you take the growth rate from he radius you get 5921km. At this point the curve on the earth is sharper. So even though the pull is the same, the throw fro the spin would be greater, resulting in a much lower gravitational pull. This means that it would be easier for larger insects to fly, and for dinosaurs to grow larger. As hearts don't need to pump as much. That's my theory anyway

[@Mr.W.Megalodon.]

Buy the foil hats!

[@jason19twofour]

Giant bug worlds are literal hell.

[@АристархАристархов-о9л]

Для жуков - нет. Вполне себе рай.

[@jason19twofour]

@@АристархАристархов-о9л Для людей да.

[@АристархАристархов-о9л]

@@jason19twofour а что инсектам те людишки. Ну мелькнул кто-то на мгновение в истории Земли. Сколько уже таких всяких было. Мелькнувших.

[@Thenogomogo-zo3un]

Giant bugs are fantastic. Dinosaurs are fantastic. everything today is smaller and crappier. Wish I had some Dinos and giant insects for pets

[@jason19twofour]

@@Thenogomogo-zo3un I like both those things but a person would stand little chance against giant bugs.

[@2horses4U]

A really superbe doc!!!

[@Geolog66]

Documentaire extrêmement bien fait, très intéressant.

[@kreutlingen]

Die Natur ist echt beeindruckend. Es wäre nur logisch, wenn sich irgendwann eine Art entwickelt die sich vom Menschen ernährt. Um das zu schaffen müsste diese Art noch intelligenter sein als wir.

[@black1883]

So einen Quatscht höre ich zum ersten Mal, gut das nicht mehr so schlaue Köpfe hier rumlaufen.

[@kreutlingen]

@@black1883 im sicheren Internet die Leute beleidigen 👍 lass dir n paar Eier wachsen. Dann musst du dein Ego nicht auf diese feige Weise aufpeppen

[@o.b.7217]

Die ist schon klar daß es Menschenfressende Arten bereits gibt? Hat nichts mit höherer Intelligenz zu tun. Nur mit Stärke.

[@joelspaulding5964]

I am interested in the why, but generally pleased that it occurred.

[@Audiorevue]

My question is, do you think if those giant dragonflies were around today that they would be a threat to people

[@morozovden77]

Не смотрел фильм, но что бы это не было, спасибо тебе!

[@СергейТемников-я1т]

Как жаль что тот комар, который летает где-то в моей комнате, не гигантского размера. А то поймать бы его и поломать ему хобот!

[@РоманСахаров-г9з]

😂

[@kosmogeorge]

Wow. Hochinteressante Doku !

[@maria-yr4jq]

Very interesting, imagine if those giant insects like centipedes were still here.

[@shirleyjhaney1041]

Like the worm, I think it was a worm, in the movie Dune.

[@shirleyjhaney1041]

Omigod Hahahahaha did he seriously say the reasons they became extinct quote remain controversial?! That reminds me of the chess playing bug experts in The Silence of the Lambs movie. Just weird.

[@BigDaddyDoog]

Hell fucking no, I would shit my pants almost immediately

[@jayjohn9680]

let me tell you something you got to open your eyes dammit!!! I saw a MURDER HORNET half the size of a grown man with gallons of venum dripping off its stinger!!! Ahhhhhhhhhhh🤯🤯🤯🤯🤯🤯🤯🤯🤯

[@alexlang2086]

What if for some reason ants all around the world got alot bigger?

[@michaelclark5626]

Insects, got smaller, dinosaurs got smaller, mammals got smaller, trees got smaller. Earth got larger, the mass got higher, the surface gravity got higher. The materials to make critters remained the same.

[@CATBARSik..]

Это мультик, просто догадки. Мы не знаем, что, было 20-200 лет назад)))) вон каждый год засекречивает документы вов

[@Juvenilescamp2000]

The narrator sounded a bit like King Charles III. Fascinating documentary. Thanks.

[@АристархАристархов-о9л]

Все немного похожи на Карла III. Кто рукой. А кто и ногой.

[@tacocruiser4238]

I wonder how much bigger humans would be if we had that much oxygen today.

[@Mogget01]

Lol, it would probably effect mammals significantly differently because of how we breathe. Our bones would probably become hollow in order to compensate for how much oxygen our bodies would be required to process, which would either shrink us, or cause us to become bigger but more brittle.

[@macaelapayn7529]

Very interesting,thoroughly enjoyed that,we have large dragonflies here in the south island nz,uropetala,one of my favourites

[@Thenogomogo-zo3un]

Probably bigger than the so called giant insect babies they had examples of in their museums

[@melissasalasblair5273]

🌬🦇Truly amazing that all of these insects were here at one time on this little globe 🍥 33:58 🐿

[@Clocental]

Они и сейчас есть, только меньше в размере. Это эволюция. 😂

[@melissasalasblair5273]

@@Clocental 🦟🤫😆

[@Lexy_Meier]

And all these tremendous changes of climate, flora, fauna etc. etc. happened without human influence. Amazing!

[@Clocental]

Человек сам часть этой фауны.

[@davewalter1216]

Very simplistic concentration on flying fossils. You are stuck trying to make up a story with only half the life history. How about what happened to the aquatic larval/nymphal stages? Fish were probably more important in the decline of very large insects than any aerial competition or predation. Relatively large dragonflies are still around and few birds make them regular prey items - mostly they catch them when they are resting in early morning. Fish, however, can eliminate the larval stages in many bodies of water. Organic matter does not need to be from angiosperms to burn up aquatic oxygen - that is just silly.

[@mereveil01]

My quess it was not only oxygen: but a higher atmospheric pressure.

[@hirschlord341]

Wahrscheinlich sind die urzeit menschwesen zu viel auto gefahren 😂😂😂

[@hirschlord341]

@@YonIon996 „der Pferd“

[@underworldnoevcovcheg6703]

Наша Земля, Гея! Всегда была прекрасна и удивительно богата!❤❤🎉

[@G-manFan1]

wth, this vid has a million views but my top comment has 5 likes

[@radman1136]

Put yer phone down pard, and walk away ...

[@sherrie619sg]

Seven 😂

[@sherrie619sg]

You're welcome

[@G-manFan1]

@@radman1136 ?

[@oliverberglas4188]

​@@G-manFan1 That is to say, who cares

[@frocurl]

I bet the entire world was filled with incredible insects

[@Elo-hv3fw]

They are still here.....just smaller.

[@samuelsammmo]

Что европейские, что американские научно-популярные фильмы сделаны то ли для детей, то ли для умственно-отсталых! То что можно рассказать за 10 минут размазано на 50. Тьфу!

[@zratxochy1623]

Русские зато охуенные😂😂😂 можешь хоть один назвать?

[@samuelsammmo]

@@zratxochy1623 любое видео Дробышевского, Паничина и иже с ними в сто раз информативно. И, да, я биолог по образованию, если что.

[@zratxochy1623]

@@samuelsammmoУ всех подача разная, этот фильм для простых людей, как ты говоришь умственно отсталых, а Дробышевский например ведёт лекции для более думающих, но тем не менее такие фильмы способствуют популяризации науки, а у нас и таких нет.

[@samuelsammmo]

@@zratxochy1623 у него на любой уровень есть. Но когда за 15 минут фильма мне одна и та же мысль подаётся по кругу три раза, я ощущаю то ли что меня считают за дауна, то ли у авторов задача растянуть фильм.

[@Titus-as-the-Roman]

The modern equivalent of Meganeura, the Dragonfly still is unable to fold it's wings, only the similar Damselflies can fold it's wings.

[@johnstojanowski8126]

Great video. Evolutionary gigantism has occurred in the past as a result of surface gravity on PART OF the globe being lowered. This is why Meganeura and Arthropleura as well as sauropods and the Ice Age megafauna attained their immense size. My theory ‘The Gravity Theory of Mass Extinction’ explains this. As my theory explains, when large surface mass moves latitudinally on the Earth, as Pangea did, the Earth’s core elements move away or toward Earth-centricity. This is based upon the law of Conservation of Angular Momentum. When large surface mass moves to high latitude, and therefore closer to the Earth’s axis, the result is a gravitational gradient around the globe; lower surface gravity on one half of the globe and commensurately higher antipodally. Pangea’s center of mass gradually moved from below the equator (prior to 250mya) and crossed over it about 250mya increasing the lowered surface gravity to near current levels causing the end-Permian mass extinction.

[@Thenogomogo-zo3un]

No, there was no 'gigantisim' we just have 'midgetisim' now. Everything just keeps getting smaller. like McDonalds portions No more 'Supersize'

[@leosaura1993]

Very good documentary thank you for posting it.

[@jelanwashington5521]

How is this a documentary? What facts did you receive?

[@subascosauce8288]

@@jelanwashington5521 what part of this documentary did you not understand? listen to or indeed learn from? Hmmm…I wonder..

[@fishingwithfilitsa]

Great video

[@WTFlux-lh2tf]

Thank You!

[@MissWitchiepoo]

I have to admit that I'm pretty happy with the fact they are extinct. I wouldn't like having giant insects all around me

[@eoachan9304]

Interesting to note that the cypress tree and its family Cyperaceae originated around 150 million years ago, not 300 million ;)

[@irgendjemand9458]

Zypressen sind Nadelbäume und Cyperaceae sind Sauergräser. Besonders letztere sind Angiospermen, die gab es ganz sicher damals noch nicht. Was es damals gab, waren Schachtelhalmbäume (Calamiten) , Farne und Bärlappbäume (Sigillarien und ähnliches). Vermutlich ein Übersetzungsfehler.

[@danielmadar9938]

Thank you. Another step forward, is to design the products so it is easier to recycle and so you get higher quality materials.

[@tonychinnery]

There is a mistake: humid air is less dense than dry air, not more dense, unless there is mist of course. That's because water is a lighter molecule than oxygen or nitrogen.

[@chatreechatree8295]

Greatest Documentary

[@leaonardland9001]

Superb!

[@akifaliyev1886]

Не надо забывать, что в те времена и деревья были огромными, размеры всего животного мира были огромными в нашем понимании. Не нужно быть академиком, чтобы связать факт больших размеров животных с количеством кислорода в атмосфере.

[@markwiegard8384]

Potentially the air above the trees had a lower oxygen level. If the area was still a swamp, the air heavy with humidity and close to the trees, potentially like a fog, there was a layer of atmosphere sandwiched between top of the trees and the swampy ground

[@RudiAusBuddelnOffiziell]

Danke für die deutsche Sprachausgabe! ❤

[@David-uf8ex]

Thank god they did shrink imagine the fly swat you would need 😖

[@NicholasWilliams-h3j]

I don't think slowly decreasing oxygen levels made large gene pools go extinct, the pressure isn't rapid enough to cause a replication pinch off, rather favoring smaller more optimized builds gradually selecting against large size.

[@olafseverin9181]

But it doesn´t mean any turning into new species. Even the Carcharodon carcharias is just a miniature of C. megalodon, both the same species. The trout of lanes is way smaller than members of the same species living in rivers. The mechanism behind is called the "island population", just adaption to altered environment, still within the same species. It is the altered phenotype but not the genome.

[@bernardluttmann5717]

Super Doku. Vielen Dank 👍👍👍

[@Waltham1892]

"What Caused the Extinction of Giant Insects?" Giant rolled up newspapers?

[@Thenogomogo-zo3un]

Humans did. They say so at the end

[@nabilknowledgeseeker445]

رائع رائع رائع رائع جدا وفريد

[@michaelclark5626]

When the Earth was smaller, the Atmosphere was taller as the surface area of the Earth was smaller. The lower surface gravity meant the atmospheric pressure was similar, and the surface temperature near the equator was also similar.

[@simplylethul]

What evidence is there that the earth was "snaller?"

[@michaelclark5626]

@@simplylethul There is a pattern of Species suddenly getting larger, and then gradually getting smaller. Insects did this, Dinosaurs did this, and then Mammals did this. Surface gravity of the Earth is the primary driver of how large any species can grow to be. As Gravity slowly increases, species gradually get smaller, or they go extinct, and get replaced by other species that take their nitch.

[@RobKilker]

"Human being would not have survived in this atmosphere" Why? Have these guys never heard of hyperbaric chambers?

[@sigmundfreudoff]

Уму не постижимо, даже в фантастическом фильме трудно представить комара размером с голубя , это за гранью понимания

[@BenjaminLincoln.]

Комар размером с голубя это уже смешно, на самом деле гигантский комар размером с доисторического птеродактиля , то и побольше, стрекоза достигала размеров тираннозавра

[@Mr.W.Megalodon.]

​@@BenjaminLincoln. Покупайте шляпки из фольги!

[@IHWKR]

Imagine driving down the highway hitting one of these things.

[@emaperez9214]

Your windshield woudn't hold up too much after an encounter with a giant dragonfly flying right into it.

[@АристархАристархов-о9л]

@@emaperez9214 то есть здоровье стрекозы вас совершенно не волнует? Что скажет Грета?

[@АристархАристархов-о9л]

Здравствуй новая фобия. Это ли не повод навестить психоаналитика?

[@peterflokker4266]

The energy transition will be the biggest environment disaster caused by humans.

[@TheWorldAround-t3u]

Hay quá nè ❤

[@fabiodeoliveiraribeiro1602]

It is really a pleasure to see this scientific documentary.

[@jelanwashington5521]

How is this a documentary exactly?

[@jelanwashington5521]

Thought those had to consist of factual evidence and proof, sources etc.

[@Thenogomogo-zo3un]

@@jelanwashington5521 How is this scientific more like

[@RedSkysAreOnFire]

spiders were really huge as well...shiver

[@Thenogomogo-zo3un]

That'd be great! give your girlfriend a new pet to replace her pet cat that the spider just ate while she was out shopping

[@martinharris5017]

Documentary starts by explaining that greater oxygen content allowed insects to be bigger. Logical. Documentary the suggests something completely different wiped them out. Still agrees that change in Atmosphere content made giant insects no longer viable. Someone looking for an explanation for something that's already been explained.

[@mortarheadd6473]

But animators make the behavior of insects look like birds. Medieval artists also depicted animals they had never seen

[@arrgosim5513]

И паук птицеед, такой: "А пранкану ка я арахнофобов через несколько тысячалетий", - и выжил.

[@ps4enthusiast266]

Imagine breathing in that air from the Carboniferous period

[@ИгорьБерезин-ы8з]

Люди тогда сразу передохнут. Они привыкли к высокому содержанию смога в атмосфере!

[@shimmyshimmyko-ko-bop594]

Oxygen is not going to make "air" extremely flammable. "Air" doesn't burn. There is no fuel in "air" and thus it cannot be flammable. It may have supported combustion more readily (e.g. made fires burn somewhat more fiercely), but that still doesn't make the air any more or less "flammable".

[@samuelrusso1708]

These Insects didn't become extinct, but adapted to the changing environment and evolved and adapted to the lower oxygen levels as well as a less dense atmosphere. Because Insects breath through their skin, along with having a more primitive type of lungs that look and function a furnace bellows. The bigger an insect is the more oxygen they require, simple deduction. Many people don't realize that dinosaurs didn't go extinct either, but evolved into the alligators, crocodiles, kimono dragons, lizards, snakes, frogs, and finally, not realized until recent fossils were discovered, birds. Yes birds take a good look at an ostrich for example. There were fossils discovered of dinosaurs with feathers as their scales began to evolve into feathers one of the reasons for dinosaurs to become smaller was the lower oxygen in the atmosphere and the plants became smaller and less abundant as well, contributing to reptiles as well as the large mammals having less food. Creatures will evolve and adapt to their environment or they will become extinct. Only the strongest and most adaptable species will survive. Although certain branches of a species may become extinct the species itself will live on. For example Although many mammals have become extinct were still have many types of mammals, as with reptiles, even apes, us being included, survive Although many types of apes, including many hominids, such as denisovians, and Neanderthals, for example. It would appear the word extinct seems like is misleading. Some species aren't extinct only certain branches actually went extinct where as others simply evolved.