The Last Living Thing Won't Be a Cockroach

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There are several ways the world could end, and scientists have given a lot of thought to what the last living thing will be.
Hosted by: Hank Green (He/Him)
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Опубликовано:

18 мар 2024

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Комментарии : 1,5 тыс.

@zacharypower7674 Месяц назад

No, the last living thing will be my old english teacher. She was in her 90s when she taught me a decade ago and apparently she's still making teenagers miserable into her 100s

@mal2ksc Месяц назад

Thankfully, Old English is now an elective course.

@UJ-JP Месяц назад

Grateful to her, she taught me English 50 years ago…strange she was 90 back then also!

@NotSoMuchFrankly Месяц назад

Where do you live that they can't find a new English teacher? If she were that good of a teacher she would've trained her replacement by now. Maybe this is a math problem. If cameras ever come to your village, they'll want to put her on the news.

@jeffbertjeffbertson4805 Месяц назад

@@NotSoMuchFranklywhere do you live? Being a teacher isn’t an apprenticeship lol

@Painfulldarksoul Месяц назад

Based.

@akumaking1 Месяц назад

“Life, uh, finds a way.”

@outlawbillionairez9780 Месяц назад

Bad movie lines will die first.

@canis2020 Месяц назад

"Clever girl."

@MrEmoImo Месяц назад

I'm impressed he made it through the whole video without saying it.

@IncoGnito-ji5du Месяц назад

I read it as Jeff Goldbloom

@iamikejones Месяц назад

“I hate being right all the time.”

@brittneyziegler5742 Месяц назад

There’s something poetic about the first and last bits of life on this planet being the same. Circular.

@filonin2 Месяц назад

The conditions will be about the same. Life started in a hellscape and that's where it will end if we are unable to spread it elsewhere.

@TheReaverOfDarkness Месяц назад

more like an arch

@theeyeofomnipotent Месяц назад

Yeah... though we forgot a big factor... that life tends to modify it's own environment, for the environment may shape us, but we'll shape it back, We're also in this equation btw, we're life too,... As we are contemplating the future of earth and life... why so passive? Why let that future unfold?, Have you imagined saving the sun and the earth too? It's not enough to think big when contemplating something this massive, we need to think astronomical Just by being a kardashev 2 civ we can rejuvenate the sun and possibly extend it's days to the blackhole era, Heres one of the megastructure/process that can achieve this: Star mining powered by a dyson swarm, Mine the "poison" of helium, and reseed the sun with hydrogen Or use a stellar engine like the one proposed in a paper: Caplan thrusters, it'll extend sun's life and move us out of dangerous supernovae killzones Regarding cycles: There is a concept where at "max" karma we can escape the cycle (for example reincarnation cycle from Budha) , and we will be cycle breakers, For we can either die at the end of all cycles or transcend... basically We can either befriend everything including the universe, or kill all of it By now, A weapon to pierce the heavens can be proposed, to use ontological concepts themself to forge a future where true utopia is possible As such I wanna atleast live till when death is not irreversible You're welcome to challenge such ideas and dreams, To know more is to always see other's perspective afterall Have a fulfilling day... :3

@ezoresmatzalcha4636 Месяц назад

We as humans go on a very similar arch too, from being a helpless baby to a helpless old person.

@rhov-anion Месяц назад

It's the ciiiiiiiiiircle of liiiiiiiiiiiiife...

@xiphosura413 Месяц назад

Funny that Ginkos were mentioned as hardy species, when they are certainly individually robust but their native habitat for a long time was elusive and even considered extinct in the wild, until a few small populations were found. Human cultivation over a thousand years ago may have saved this incredibly unique species from extinction, which is a nice tale in the face of our current proclivity to causing extinctions!

@dweebteambuilderjones7627 Месяц назад

And every other species of ginkgo is extinct due to being outcompeted by flowering plants.

@MaDrung Месяц назад

@@dweebteambuilderjones7627 It might be the slow change of genom that gives them so much robustness. But this ofcourse means that they are slow to adapt to changes.

@gregkocher5352 Месяц назад

A very large Ginko has stood at the corner of my towns High School for many decades. The fruit of the tree smells like vomit and often ends up getting tossed into groups of the student body, Lol.

@Karkatreal 22 дня назад

i didnt understand a thing you just said my guy

@Reptile1404 22 дня назад

⁠@@KarkatrealThen your education system failed you, and I hope that you’ll be able to learn what it couldn’t teach you.

@96unicorns Месяц назад

I love the question marks on the leaf even though ginko is so distinct 😁

@flingage Месяц назад

It did make me chuckle

@zolacnomiko Месяц назад

WHAT COULD IT BE???

@dorkchops Месяц назад

"WHOS THAT POKEMON" "PIKACHU!?!" "its Ginko!!!" "F@#K"

@ShovelChef 23 дня назад

@@dorkchops 😂 you beat me to it. G'job.

@quinu Месяц назад

That head of hair brings me so much joy. Looking amazing and healthy Hank.

@bawlzack7877 Месяц назад

I'm bald :(

@ifrazali3052 Месяц назад

@@bawlzack7877 I am balding and I am 25

@JD-ub5ic Месяц назад

@@bawlzack7877 but is it due to a medical condition? Hank had some pretty severe medical issues lately, so I think the OP is referring to the fact that it's an indication he's through the worst of it.

@quinu Месяц назад

@@JD-ub5icYeah basically

@marytomlinson9933 Месяц назад

I have seen a lot of peoples' hair come back curly after chemo baldness. It's really cute!

@alanbudde8560 Месяц назад

Evolution: come on gingkos try something new? Gingkos: Nah I think we good, we're basically done with evolving everything we need

@LisaBeta-42 19 дней назад

Oh, but they do: in extreme situations they fall back on very, very old information stored in their genes: had one "tree-top" that grew in a whole new tree in the last decades, but in the beginning it developed cone-shaped leafs - the pointy bit at the stem. Normal leafs fan out more or even get this divider in the middle of the leaf (Like a Time Lord Collar)

@ilaurenbunny1576 Месяц назад

Ginkgo trees are my favorites! Knew what the video topic was just from the leaf shape!

@averywillow4327 Месяц назад

Same!

@anyascelticcreations Месяц назад

Me too

@imightbebiased9311 Месяц назад

What's the most expensive tree in Japan? A Ginkgo tree! (This joke only makes sense to people who understand English and Japanese.)

@chumanho Месяц назад

Me too, the most beautiful leaf in my book, especially when turned yellow.

@Doom2pro Месяц назад

The "fruit"... not so much...

@GardenUPLandscape Месяц назад

Ginkgos are one of my favorite trees ❤ Then there's Smooth Scouring Rush, a reed type plant which has also been around since the dinosaurs and hasn't evolved a bit because it hasn't had to. It's got survival figured out - much to the annoyance of many gardens who don't want it in their gardens....

@aequinoctiale Месяц назад

woah!! scouring rushes (we call them horsetail plants) have been one of my favourite plants for a very very long time, but i had no idea they were that old! going to go hop in a little rabbit hole about them later :D

@GardenUPLandscape Месяц назад

@@aequinoctiale ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-pYvqjj6a3WI.htmlsi=a0GtPk_D_ecOlza5 😊

@noeditbookreviews Месяц назад

Is that the equisetum? I just rooted a bunch for fun. Very cool plant. Gotta give it up for the bryophytes, too. Hell, all of kingdom plantae is amazing.

@GardenUPLandscape Месяц назад

@@noeditbookreviews yes! That's the one. There are two that grow in my area, horsetail which has lateral branching and smooth scouring rush that's just the straight stalk with a spore head at the end. They are fun to dig, especially in soft soil when you can just follow a root forever!

@abushams3336 Месяц назад

'Dinosaur grass' is what we used to call it ..

@imgonnastealyourgirl Месяц назад

I am so glad to see this presenter healthy and enthusiastic again. Makes my heart smile.

@DaLlami Месяц назад

Was he sick?

@Pisti846 Месяц назад

@@DaLlamiyes, cancer.

@applegal3058 Месяц назад

@@DaLlami he had cancer.

@oxylepy2 Месяц назад

Not only did he have cancer, he kept giving updates and making videos during treatment. He and his brother are treasures, no matter the people who were complaining about him telling people he had cancer.

@applegal3058 Месяц назад

@@oxylepy2 indeed!

@adriosi4304 Месяц назад

Imagining that last little bacteria dying on this planet kinda sad. It's like a final whisper of life in a saga that spanned billions of years

@captain_context9991 Месяц назад

I choose to believe we will find a way off this rock by then.

@kats9755 Месяц назад

It'll put the chairs back on the tables for us and lock up the planet behind it when it goes

@itsv1p3r Месяц назад

@@captain_context9991maybe we wont if we stupidly halt all our progress as a species in the name of reducing carbon emissions. We need to get off the planet and established elsewhere before we voluntarily send ourselves back to the stone age

@jojijohn2608 Месяц назад

Yeh sounds soo ...........empty and lonely

@nekomimicatears Месяц назад

@@itsv1p3r if we destabilize our climate there won't be much of us to get off of the planet.

@dianafossi1295 Месяц назад

I will never stop obsessing over Hank's new curly hair IT LOOKS SO GOOD!

@novaenricarter705 Месяц назад

Idk why he reminded me of blues clues this video lol

@portalbuilder7021 Месяц назад

@@novaenricarter705maybe the striped shirt?

@queenWillowwww3893 Месяц назад

It’s called chemo curls! I don’t know the specifics but it comes from chemotherapy

@AroundTheBlockAgain Месяц назад

Yep it's chemo curls! My dad had similar after he had chemo. Also came in much darker. He was a redhead but suddenly he had black hair like his own father did before him.

@queenWillowwww3893 Месяц назад

@@AroundTheBlockAgain Thanks for adding! Correct me if I’m wrong but it goes back to normal after a while of growing, right? -I also didn’t know that the hair could grow back darker but I suppose that makes sense!

@WyrdieBeardie Месяц назад

Life finds a way...well, until it doesn't.

@filonin2 Месяц назад

Life has a billion years to find a way to another rock to live on. We are likely that way.

@falleithani5411 Месяц назад

@@filonin2 I'm on team 'just make the sun smaller and filter out its fusion byproducts', myself. It requires less advanced technology to do it, it's more sustainable, and it means we get to keep all our infrastructure and historical sites, as well as preserve the Earth's entire biosphere. It'll also make the sun outlive every natural star in the universe, if we do it right.

@calebdonaldson8770 Месяц назад

Life finds a way until the sun gives out. Whoops.

@goodmaninthemoonyt4778 Месяц назад

I don't think that's how easy to get rid life out in this universe. The things that life could achieve in extreme circumstances that nobody expect, we might be a parasite in living in a rock because how efficient life itself adapt and evolve. Making us successful flourishing in a harsh unforgiving cold universe. Thinking about it makes me feel special and grateful, at the same time, knowing life true potential for greatness.@@calebdonaldson8770

@aaamogusthespiderever2566 Месяц назад

@@falleithani5411but how would we get the technology or resources to do that

@dallinchecketts3786 Месяц назад

Preppers everywhere were geeking out when he talked nuclear war then disappointed when microbes took their place on top

@FarmerDrew Месяц назад

You mean I gotta use alcohol for CLEANING

@observingrogue7652 Месяц назад

I wasn't geeking out, I was too busy being angry that we are still stuck on this planet, because of the stupid & wicked people among us, and in positions of authority. We should be living across the solar system by now, and be so advanced, that aging & cancers are cured, and we live forever, but instead we are still collected on this rock, able to be whipped out by any massive thing. On top of us being held back & sabatoged by all these degenerate people. I hate so many people.

@garywheeler7039 Месяц назад

Yeah but he never mentioned what COLOR those microbes would be(!)

@ToudaHell Месяц назад

Watching your recovery from cancer treatment is amazing. You are an inspiration, my friend.

@madelinehart3933 Месяц назад

my ginkgo leaf tattoo is one of my most recent, i love ginkgos so much!! i got it to remind myself that i am resilient and persistent. the ginkgo tree felt like a good representation of that!

@roycasmohamed6340 Месяц назад

U think ur Sh u not even the f

@novaenricarter705 Месяц назад

I love that!

@awaredeshmukh3202 Месяц назад

I also love that! Plant properties are definitely going on my inspiration list for if I ever get another tattoo

@_WOR Месяц назад

How many people have you been with..? 🤨

@madelinehart3933 Месяц назад

@@_WOR ?????

@GaiaCarney 27 дней назад

💛A ginkgo tree decked in its golden foliage is a thing of beauty! I wonder if they should be planted more in reforestation projects?

@idioteza Месяц назад

sad not to see fungus mentioned, they were some of the first to make it to the Earth's surface and one of them feeds of nuclear waste in Chernobyl

@tauntingeveryone7208 Месяц назад

I am so happy you mentioned my favorite tree. Ginkgo trees are just an amazing tree. They can live longer than redwoods. Ginkgo trees are also dioecious. Male ginkgo trees are preferred by arborists because they make great shade and they do not produce ginkgo fruit. Ginkgo fruit smells rancid and like vomit. Furthermore, ginkgo fruit can cause skin irritation and the fruit part can be toxic in high doses. However, inside the fruit there is a nut that is supposedly good. The nuts of the ginkgo fruit are low protein and have a lot of medical benefits associated with them. Ginkgo trees also can survive some of the harshest souls and its leaves turn a golden yellow in the fall. All in all, ginkgo trees are amazing. It is interesting to think that this tree is older than the dinosaurs.

@aliciachristopher6506 Месяц назад

I have a female ginkgo down the street from me with a male next to her and her fruit stunk. The male was cut down to make way for a house so no more ginkgo fruit. The fruit smelled like rotting meat.

@Juanmarco1988 Месяц назад

Looking really good buddy! I'm glad you're doing better 👍🏻

@Foiled_Foliage Месяц назад

OH. WOW hearing about the patreon. I'm a very broke college student, but this stuff is important and should be shared and continued. I will certainly donate.

@varoonnone7159 Месяц назад

It will get better Just stay away from debt

@sierrabrady1508 Месяц назад

I am so grateful for the people who are able to donate and help fund this show. I am living paycheck to paycheck while doing animal rescue, but if I were rich I would fund the living heck out of this show. You guys do amazing work, I watch all of your channels. I would also like to say thank you to anybody who is able to donate because this show gives me life

@geslinam9703 Месяц назад

Thank YOU for helping animals!

@AveryMilieu Месяц назад

I planted a Ginkgo tree in my yard. Two years later, despite all my care it died. My mother referred to it as a Black Thumb. Other things I planted in that yard are thriving, but the little tree never came back.

@SaiyanHeretic Месяц назад

Rad Roaches: Not Likely Rad Scorpions and Rad Ginko: Very Possible So keep your Pip-Boy tuned up, Vault Dweller.

@KarthikSubramanianKrishnan Месяц назад

It's almost the end of summer for me. Time to pluck the Ginkgo leaves and soak them in alcoholic tincture. PS: Surprised not to see the Tardigrades in this video!

@qynoi42 Месяц назад

I thought tardigrades would get a mention as well.

@marckyle5895 Месяц назад

I forgot about Tardigrades. I doubt they'd survive the sun going red giant unless they managed to take on AEs or make their way outward. I hope the waterbears make it. (imagines a galaxy-wide group mind of tardigrades "it's warm, come this way")

@DustyNonya Месяц назад

Never thought to see if Ginkgo leaves were any good medicinally. My oldest walking stick (25 years old, still unfinished with the original end split from improper curing) is a Ginkgo staff coppice from the edge of our middle and highschool fields from old ornamental spread. The only real drawback is that its ridiculously light and catches terminal velocity like a whiffle ball bat 😂.

@russell2449 Месяц назад

Exactly my thought, those are some of the toughest critters on the planet ;?)

@dorongrossman-naples9207 Месяц назад

Tardigrades aren't extremophiles. They can tolerate extreme conditions through various methods, but they can't live in them permanently.

@charmainewalker1260 Месяц назад

So happy you’re looking so much better Hank! We love you here teaching us new things all the time!

@neminem233 Месяц назад

Thanks for the free anxiety! Love your content, glad to see you doing better

@danielsanchezandrade 14 дней назад

I was literally wondering whether you had added the sources and I'm truly astonished bc you did it. Thanks for your amazing job!

@AudraK Месяц назад

One video idea I’d be curious to see discussed, especially since I personally don’t know too much about it and how factual it is, is the archeological site in Zambia that has petrified logs with cut marks that were notched together at close to a right angle with a suggested date of 476,000 years old, bringing up the question of if it was made by our ancient relatives, a different species, or our relatives but earlier than we thought

@GrumpyOldFart2 Месяц назад

I have a dumb question….couldn’t it be that the MATERIAL is that old, but it was found by some ancestor 100K or 50K years ago and they made something with it?

@prophetzarquon1922 Месяц назад

They were cut before being -petrified- _buried_

@MawdyDev Месяц назад

Where did you get this information from? I want to look into it

@GrumpyOldFart2 Месяц назад

@@MawdyDev RU-vid doesn’t allow links in the comments, so just do a search for: zambia petrified wood cut. A bunch of articles will come up.

@AudraK Месяц назад

@@MawdyDev I heard it mentioned in a Simon Whistler video but it was very brief, then the RU-vid overlords hacked into my brain enough that I was then recommended a more In depth video on it. Look up KSAT 12 they have a video on it from 5 months ago called “Archaeological site from 476,000 years ago ..ect” or something close to that. It was worth the watch

@wisdomofthewolf Месяц назад

Skip the anxiety, if you want, and get to the punch line: 8:49

@davidcovington901 Месяц назад

Appreciate that. 9 minutes to get to some sort of point. You saved many lifetimes today.

@dru4670 Месяц назад

Thanks dude

@bradentheman1373 4 дня назад

thanks bro ❤

@blakeastwood2510 Месяц назад

Good to see you back and looking healthy Hank, we missed you!

@ToboeOkamiKiba Месяц назад

Great to see you again Hank!

@RaulSuarez-re9sg Месяц назад

Thanks - that was very informative and just what I needed to brighten up my day!

@ricardoabh3242 Месяц назад

Taxes will survive

@shawnbay2211 Месяц назад

Unless communism wins.

@always-alicia Месяц назад

And your boss will still be calling you to make sure you’re coming into work on that day!

@empathyisonlyhuman7816 Месяц назад

Howdy hi hi, Hank, I gotta say. You are looking very healthy in this video. I'm glad to see it, you had a lot of people very worried about you during your experience with lymphoma. Way to go champ.

@harley3514 Месяц назад

Wow!! Thanks for the episode guys 😊

@philosophusbellator Месяц назад

I almost never watch YT videos in their entirety. This one had me glued to the end, so to speak. Very compelling!

@filonin2 Месяц назад

Ritalin

@kindlin Месяц назад

Try Veritasium, any Tom Scott video, Steve Mold, there are a lot of amazing creators that you can hardly help but watch every minute of their videos. Veritasium's "what IS electricity?" video series led to literally 100+ other great RU-vidr's, big and small, all discussing the topic, it was a good time to be in science YT.

@megan5867 Месяц назад

I remember hearing a science teacher in middle school talk about super novas and the "kill zone" and it legit stuck with me forever as a legitimate fear. That one freaks me out, just boom, little to no warning, everything gone.

@randyt3558 Месяц назад

Ginko Biloba....beautiful fall yellow, the tree always looks like it's under arrest...'hands up'.

@troyclayton Месяц назад

One of the coolest things about Ginkgo is that it still has flagellate pollen, like sperm (ok, not really the pollen- but I can't think of any 'higher plant' who's gamete swims down a tube). Like many other Gymnosperms, the 'gestation' period is long.

@believeinpeace Месяц назад

Thanks!

@ThePartyKnife Месяц назад

Thank you

@believeinpeace Месяц назад

@@ThePartyKnife Are you with Sci Show?

@ThePartyKnife Месяц назад

@@believeinpeace Afraid not :) I just appreciate that someone is supporting a great channel that I've been watching for like 10 years! :D

@believeinpeace Месяц назад

@@ThePartyKnife You are kind. It’s one of the best channels.

@ThePartyKnife Месяц назад

@@believeinpeace I couldn't agree more! You have a great life kind sir of the internet! :)

@Jadelious Месяц назад

Loving these longer videos!!

@cameronfreeman5592 Месяц назад

I thought this would be a fun episode about resilient creatures and instead got anxiety, thanks Hank T_T

@noeditbookreviews Месяц назад

My botany professor was totally turgid for ginkgo trees. Specifically the leaf vein pattern and the smell of the female tree's fruits.

@dweebteambuilderjones7627 Месяц назад

"Turgid" might not be the right word to use there...

@firebladetenn6633 Месяц назад

Hank: "Something, maybe a burst of Volcanic activity..." Other creators I've heard talk about it: "Imagine Russia just...exploded."

@DEMONOFLOVEANDDEATH Месяц назад

Bless the SciShow

@ItachiUchihaisamartyr Месяц назад

Mr. Hank Green, I am really happy that you are better now. It's really nice listening to your voice teach me stuff I would die from boredom learning in school.

@lyndsaybrown8471 Месяц назад

Sad cockroach noises

@thehellezell Месяц назад

looking good Hank!!! Glad to see my fave tree getting some thumbnail time. Hope mine gets a good growth season in this year (god, did i just say that? man i’m old)

@roeb4209 Месяц назад

Congratulations on beating cancer brother glad to see your hair back

@Kaiju_Tea_Party Месяц назад

Recently read the book The Ends of the World by Peter Brannen. It's an excellent book all about mass extinction events Also, there are some paleontologists who think that the "Asteroid that killed the dinosaurs" is actually the "asteroid that triggered massive volcanic activity that, in conjunction with the asteroid, killed the dinosaurs (at least, the non-avian ones)

@molybdaen11 Месяц назад

I heard that too, that the mezeroif alone was not enough but was followed by vulcanic eruptions, with the usual mass extinction after that.

@captain_context9991 Месяц назад

Try the Bobiverse books. They are excellent.

@prophetzarquon1922 Месяц назад

It's not just _some_ paleontologists: Everyone familiar with the fossil records of that period, can see that the impact was not an insta-kill. The extinction event was on the order of 100,000 years long

@diablo.the.cheater Месяц назад

tbh, "killed the dinosaurs" is a bit of an overstatement as the avian ones survived pretty well, more like the asteroid that forced dinosaurs to go smol

@prophetzarquon1922 Месяц назад

@@diablo.the.cheater Yeah... Actually, even that is a bit of a mislead, because the big ones mostly just died. The ones that survived were _already_ smaller than the "terrible lizards" of the Cretaceous etc

@MechakittenX Месяц назад

What a cheerful episode!

@molybdaen11 Месяц назад

Almost as cheerful as a kurzgesagt video.

@jojijohn2608 Месяц назад

@@molybdaen11yes yes

@Yur_wey90 Месяц назад

Nice to see you doing well Hank!!

@xenocampanoli815 Месяц назад

Really good presentation. Thank you.

@theperfectbotsteve4916 Месяц назад

the last living thing is the 1% of bacteria that nothing can kill

@cabbagenut Месяц назад

Wow Hank's curls are approaching Peter Pan levels of boyish curls.

@chingu1980 Месяц назад

It's soooo good to see you hair back dude!

@aidankeller1717 Месяц назад

Ginkgos are cool. We have the Ginkgo Petrified Forest National Park here in WA. It's where the very 1st specimen of Ginko petrified wood was discovered, even though it only represents around 1% of the material found at the location. It's also part of why petrified wood is the state gem.

@andrewthehedgehog911 Месяц назад

Lookin good, Hank

@mvsh Месяц назад

This episode gives me strong Kurzgesagt vibes and I like it

@molybdaen11 Месяц назад

Only thing missing were the birds.

@nariu7times328 Месяц назад

This was wonderfully written.

@peterblair7876 Месяц назад

Can't wait for the next one. I'm excited.

@raettchen1988 12 дней назад

tardigrade: Am I a joke to you?

@pascalwilt9007 День назад

I was thinking about it too 😂

@rayhaanadam9520 Месяц назад

The hair is coming along great.. eagerly awaiting the 1st cut and new hairstyle 😊

@chandraathithan11 Месяц назад

Informative content.

@tofush0e Месяц назад

dude your hair is looking fabulous

@Ravenseyes10 Месяц назад

You are looking so much healthier! I wish you well!

@mrtienphysics666 Месяц назад

His cancer seems to have healed.

@tux_duh Месяц назад

@@mrtienphysics666 bad word for it, he's in remission yes but cancer is never really "healed" once you have it once you are at higher risk to get it again

@mrtienphysics666 Месяц назад

@@tux_duh he looks healthier than people who has no cancer.

@florisv559 8 дней назад

His enthusiasm in announcing the end of all life makes me wonder about the state of his relationship.

@lightspeedbubble7359 Месяц назад

It never occured to me how poetic the end would be. Thanks for that!

@flybefree Месяц назад

@Hank, my personal theory on what killed the dinosaurs is suffocation. Large creatures need more oxygen and when the levels dropped due to the sun be blocked, all the large animals suffocated.

@_ninthRing_ Месяц назад

Dinosaurs had the same type of extremely efficient breathing mechanism (with lung tissue extending into their hollow bones), where the air flows most of the way in a single direction. This would have allowed them to survive in somewhat more anoxic conditions than many large mammals. While 0₂ levels certainly would have dropped in the immediate aftermath of the vast heat blast from the asteroid's impact, the subsequent firestorms from burning forests sucking up loads of oxygen & the few years of dust clouds blocking sunlight to kill off green plants, I doubt it would have dropped much below 16% of atmospheric volume (it's 23% now). There just wasn't enough time to do much more damage before plants began to recover at an astonishing rate. I suspect that the Extinction of the Non-Avian Dinosaurs was probably due to a complex combination of those forcing factors we've considered (eg: the heat & shockwave of the impact, disruption of food webs, environmental temperature change, ocean acidification, etc.) & more that have never occurred to us - though it certainly wasn't as instantaneous as we once thought, with some smaller species surviving for a few million years after the K-T Boundary.

@flybefree Месяц назад

@@_ninthRing_ I'm not saying I'm right about suffocation, but your response contains a bunch of assumptions that could be wildly incorrect. In 2013 Science Daily reported that oxygen levels 220m years ago were 10 and 15 percent. That one fact could unravel your entire argument. Do birds need to breath through their bones at sea level? Probably not, but it's required for altitudes where oxygen is lower. If dinosaurs needed their bones to breath at sea level, then that would suggest they were already vulnerable to suffocation.

@360.Tapestry Месяц назад

easy come, easy go, friends. we're all just travelers visiting on a short lease visa to have a glimpse. we came from eternity and we shall return

@jackshea6937 Месяц назад

OMG ! Great work; thanks.

@nathanbrooks2581 Месяц назад

This new? Lookin healthy Mr green. Happy to see it. Keep it goin champion.

@markadams7046 Месяц назад

Of course if that supernova in a kill zone did happen today, we wouldn't find out about until up to 160 years from now.

@volftrap Месяц назад

But we can tell if a star is close to supernova, so we'd probably have a little heads up.

@marckyle5895 Месяц назад

there _would_ be established precursors that would give us an ETA of a Super. There are certain signatures that are light emitted when the stellar object is gobbling down the last bit of consumable fuel before the big old gravity event transpires.

@filonin2 Месяц назад

Or if it happened then 159 years and 355 days ago it will happen here tomorrow. Everyone is aware of light speed limitations.

@captain_context9991 Месяц назад

I doubt anyone will be left to "choke" over a million years of depleted oxygen. Those that rely on it, will be gone then.

@shanerooney7288 Месяц назад

Why would they be gone? Because they would have choked on a lack of oxygen.

@cmoor8616 Месяц назад

Nice video, and congratulations on the hair sir. Stay well for us :)

@qrowbranwen1864 Месяц назад

10,000 years will give you quite the magnificent light show

@punkinlady1039 Месяц назад

I need to stop getting existential crises from these videos and focus on the ones where Hank talks about chemicals that go off if you make dirty looks at them

@wisdomofthewolf Месяц назад

Pay attention, world leaders: 7:20

@MajorMosh710 Месяц назад

Love you Hank hope all is well!

@krzysztofmiszczuk2089 Месяц назад

Keep it going, Hank! 💖

@captain_context9991 Месяц назад

The last living thing.... Will be microbes deep, deep below the earths surface.

@zackcorrell5746 Месяц назад

Exactly

@skywatcher458 Месяц назад

are you a real person? some bots have copied the same comment you made and got double the like counts

@captain_context9991 Месяц назад

@@skywatcher458 Im not a real person, no.

@SB-hy9iq Месяц назад

Lol

@prophetzarquon1922 Месяц назад

Sadly, I also, am fictional

@graemem111 Месяц назад

I was very saddened when the unfortunate demise of Lemmy Kilmister (lead singer with the incredible Motörhead for the uninitiated) burst my youthful bubble, as he and cockroaches were certain to outlive us. But the knowledge that some of the extremophiles that I’m studying could help us mere humans prepare better for the inevitable is a small consolation. RIP Lemmy.

@takadahoka Месяц назад

Welcome back hank we missed u!!!!!!🎉

@nerdynanny Месяц назад

Random query but-- did chemo curl your hair? My mom had the same thing happen when she went through it-- the curls are adorable! I hope you keep growing them out, they're the brand of a survivor. Jazzed to hear you're in remission, you're a science hero man.

@willabyuberton818 Месяц назад

I'm not sure about the last living thing, but I'm pretty sure the last intelligent thing will be something rather like a human checking that all the microplastic has been cleaned up before returning to its family aboard a far more efficient and long-lasting habitat than a mere planet.

@filonin2 Месяц назад

A habitat that lasts more than billions of years? Ok, lol.

@AgentMercer Месяц назад

Childish idea

@willabyuberton818 Месяц назад

@@filonin2Give it a couple tens of thousands of years before you write it off.

@JasonFollett Месяц назад

SciShow should do an episode on how toxic or inhospitable Earth would be to alien life.

@molybdaen11 Месяц назад

Letz see: High levels of toxic oxygen which destroys DNA and even let metals rust. Agressive microbes everywhere. Vulcanic eruptions, earthquakes and weak magnetic field. Low level of free available amoniak. High concentration of salt. Annoying natives.

@moonbasket Месяц назад

What a cool video! Thank you

@Destynie619 Месяц назад

Hank!!! Missed seeing you on SciShow!!!!🥰🥰🥰

@JavierFernandez01 Месяц назад

death death death 8:48 the trees :)

@OO-un8ks Месяц назад

Would reigniting dying or dead stars be feasible for artificial interstellar habitations?

@OO-un8ks Месяц назад

Thanks for reading my question

@briebel2684 Месяц назад

There's nothing left to reignite. Nuclear fusion has a limit on what elements being fused can resist the crushing pull of gravity. All stars are basically a competition between gravity trying to crush everything, and fusion giving off enough energy to resist the big crush. Gravity always wins in the end. The only real difference is which stars end as white dwarfs, those that end up as neutron stars, and the ones that collapse into black holes. Total mass being the key to it all. However, red dwarf stars are thought to "live" much, much longer than other stars. Supposedly the universe isn't old enough for a single red dwarf to have reached the end of its fusion cycle. So just move to a stable red dwarf system, if you can find one.

@TheDanEdwards Месяц назад

The problem with using biological words like "die" for inanimate objects is that said terms are misleading. A star does not literally "die". Its core simply runs out of material to sustain fusion. When fusion ends the outflow of energy stops, so the upper levels of the star will then start to fall. If the star is big enough one gets a nova. If not then the star's atmosphere just sort of bounces out into space and the remnant white drwar sits there cooling for ever.

@MrMrprofessor12345 Месяц назад

You could extend the life of a star by reducing its mass using megastructures to drag gases off its surface, eventually reducing its luminosity and changing its type. Setting aside how utterly insane that undertaking would be and how the gathered gases would be stored so they can be reintroduced at a stable rate over billions of years. Along with how long that "eventually" initially mentioned would take. Reignition is...insane. I guess technically you could gather enough hydrogen, helium etc, coating the dwarf with enough fusible material that you have a layered star.

@marckyle5895 Месяц назад

@@briebel2684 The way to survive long-term, like a Trillion years would be to wrap a Dyson Sphere around a red dwarf of appropriate specifications and distance for the needs of your people and create a self-sustaining friendly ecosystem. As others found and settled the red dwarfs would all suddenly blink out one by one. It would be eerie to look out and see a stellar darkness. I think the barrier that can't be passed by us will be organic, of a nature I can only conjecture like at this point.

@kingnateoh Месяц назад

You're looking good Hank. Great to see brother 😊

@janagardiner1084 Месяц назад

omg hank you have your hair back!!! i’m so happy for you

@jarcher5626 Месяц назад

If you had worn a red & white striped shirt, I would have thought this was the easiest game of “Where’s Waldo” ever created.

@warrenbooth2103 Месяц назад

He seams to be enjoying telling us about this just a little too much .

@tylerwhorff7143 Месяц назад

Very cool thanks for the video

@Brown95P Месяц назад

@10:16 Oh, so *_THAT'S_* how you pronounce "coelacanths"; sea-lacanths. Neat. Fortunately, a billion years is just *_way too long_* to even remotely worry about the faraway descendants of my faraway descendants.