How Did Life Begin? (Evolutionary History): Crash Course Biology #16

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Humans may have been around for a long time, but life has existed for way longer. In this episode of Crash Course Biology, we’ll journey through deep time to uncover the history of life on Earth. We’ll explore the big, game-changing leaps where life diversified, changed, and just plain persisted.
Introduction: How Life Began 0:00
Macroevolution 1:15
RNA & DNA 2:43
The Timeline of Life 3:42
Stromatolites & Fossils 6:03
Dr. Meeman Chang 8:31
Drivers of Macroevolution 10:00
Review & Credits 11:56
This series was produced in collaboration with HHMI BioInteractive, committed to empowering educators and inspiring students with engaging, accessible, and quality classroom resources. Visit BioInteractive.org/CrashCourse for more information.
Check out our Biology playlist here: • Biology
Watch this series in Spanish on our Crash Course en Español channel here: • Crash Course Biología Sources: docs.google.com/document/d/1G...
Crash Course is on Patreon! You can support us directly by signing up at / crashcourse
Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
David Fanska, Andrew Woods, Tawny Whaley, Sean Saunders, DL Singfield, Ken Davidian, Stephen Akuffo, Toni Miles, Steve Segreto, Kyle & Katherine Callahan, Laurel Stevens, Burt Humburg, Aziz Y, Perry Joyce, Scott Harrison, Mark & Susan Billian, Alan Bridgeman, Breanna Bosso, Matt Curls, Jennifer Killen, Starstuff42, Jon Allen, Sarah & Nathan Catchings, team dorsey, Bernardo Garza, Trevin Beattie, Eric Koslow, Indija-ka Siriwardena, Jason Rostoker, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, William McGraw, ClareG, Rizwan Kassim, Constance Urist, Alex Hackman, Pinapples of Solidarity, Katie Dean, Stephen McCandless, Wai Jack Sin, Ian Dundore, Caleb Weeks
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Опубликовано:

22 май 2024

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Комментарии : 103

@christinarose2877 7 месяцев назад

Evolutionary biology is my favorite topic, I love that this series is here!

@stormweaverwitch 7 месяцев назад

please tell me you're gonna be back with Crash Course: Entomology, you've been a true delight to learn from so far!

@bloodandempire 7 месяцев назад

I love crash course so much

@TharaUnfurling 7 месяцев назад

Love this, very well explained and simplifies complex concepts. You answered the question with sound interweaving of biology, geology and archaeology. So thankful to you and the CrashCourse team!

@maxravenwood3877 7 месяцев назад

I think I've missed a few episodes but this is always still cool to watch new. Thanks to Dr. Sammy and the PBS/Crash Course teams!

@Pecisk 7 месяцев назад

Whatever origin has been, I find it quite comforting that conditions and building blocks for building life is actually very common in universe. We might be "the law" not "exception" in universe.

@phlezktravels 7 месяцев назад

Love this course!

@scottxiong5844 7 месяцев назад

Nice episode! Kept my attention the whole entire time.

@oneeyedakuma9448 7 месяцев назад

I'm only saddened I didn't notice this new series sooner! I love this dude!!

@--..-...-..-.--.... 7 месяцев назад

Dr. Sammy, you are awesome! Thank you CrashCourse for this great video!

@gailaltschwager7377 7 месяцев назад

Thank you so much!

@sands7779 7 месяцев назад

love this, thank you

@pepitawhatley2724 7 месяцев назад

I love this

@saumyamathur4862 7 месяцев назад

hey, that’s my avatar at the end there! P4A is always a good time, & as a biologist myself, it means so much that I can make an appearance here while donating to a great cause🥰 yay CC!!!!

@blathnaidmulleney9102 7 месяцев назад

Wow! What a great and educational video :)

@levilukeskytrekker 7 месяцев назад

Great video!

@user-dm8un5mu4c 7 месяцев назад

Your videos are very helpful for me to prepare my exam!!! I think your animation is very good! By the way, can I ask you what software do you use to make this videos?

@sharadpandya2655 4 месяца назад

Love this ❤

@RR-dt6bp 3 месяца назад

Thanks!

@cnut5475 7 месяцев назад

Great start. Unfortunately the shirt made me think you were wearing lederhosen, so i kept expecting you to jump on the table and polka, so i listened more than i watched. I guess thats just how my brain works.

@nikolaifinukov3375 7 месяцев назад

More from this guy, yea!

@skybluskyblueify 7 месяцев назад

That shirt is awesome! Keep up the great work.

@derheadbanger9039 7 месяцев назад

11:42 Evolution has no goal or plan? Crabs would say otherwise! 🦀

@kab6754 6 месяцев назад

The montage of costumes was such a treat; I loved it～❤❤❤

@himakartikeyanaidu3360 7 месяцев назад

Can you please provide the link of your Crash course app? 'cause the app's not working on my mobile. I don't know about the remaining mobiles but It's not working on my mobile. So, Please provide me the link of it and I'm excited for the upcoming videos on CrashCourse. Thank you.

@mattkuhn6634 7 месяцев назад

Dr. Sammy has the best theme song transitions

@michealwestfall8544 7 месяцев назад

I like to think seafoam helped make life.

@babatundequadri9970 7 месяцев назад

Dey play!😂 Just dey play!😂

@plantjunkie69 7 месяцев назад

i really wonder what humans will look like in a million years... if we even make it that far lol

@johndoh5182 7 месяцев назад

My problem with this video or course is the skipping of earth's collision with another large body, which formed a larger earth and blasted material out which eventually would become the moon. This collision is critical. Life on earth is adapted to the moon phases and you don't get there overnight. That alone is a billion or so years of evolution. This also requires the explanation of how after a blast of two planets colliding which would superheat everything once again and evaporate almost all the water on earth, how water gets BACK to the earth. This is about 2 minutes of discussion. It shouldn't have been skipped

@user-je7bu3yn7x 7 месяцев назад

The more we learn about the complexity of cells, along with the seemingly impossible difficulty of even beginning to create the building blocks of a cell in the ideal conditions of a lab, demonstrates that a lack of knowledge does not hinder people from explaining things about which no one yet understands.

@dylankeene1915 7 месяцев назад

Weird not seeing Hank but nice to have a refreshing setting. Also, first!

@lolitalolipops4154 7 месяцев назад

Can you clarify the correct term - is it “gone extinct” or “become extinct “ more correct?

@namelesscare7982 6 месяцев назад

Educational videos like this also hold a mirror up to debunk religious "creator" theories about the existence of species.

@ggr_light809 7 месяцев назад

4.6 billion years later look how we evolved. 👌 👏 WOW

@therongjr 7 месяцев назад

How irresponsible of you to say that the dinosaurs went extinct without throwing a "nonavian" in there. Down with paraphyly!

@jeffhappens1 4 месяца назад

If life began this way, can new life begin this way today?

@marcoduarte291 6 месяцев назад

❤

@jfdavis668 7 месяцев назад

Doesn't seem to play past 2:51

@jfdavis668 7 месяцев назад

Nevermind, started to play again.

@benjamindover5676 7 месяцев назад

At least we know it didn't happen by "God Said" and poof!

@SeekNeo 7 месяцев назад

The origin of life is one of the subjects I'm most curious about, it's so crazy to think how can something dead become alive

@eddihurta7173 7 месяцев назад

Crash Course do you think the darkness of space will overcome the lights from suns and planets ?

@GrimFelArt 7 месяцев назад

Insects are cool but I like WORMS Worms are great

@RobCoghanable 7 месяцев назад

Age of the planet is a scientific guess subject to huge swings in time. We keep standardizing things to explain and then are surprised to learn of great variation to our standard estimate. Why can’t we just say we don’t know but here is a non binding possibility?

@mikegyver3193 7 месяцев назад

How did the earth get there 🤔

@joshuaalexanderjohns 7 месяцев назад

So you start with a universe, then big bang, cool off, stars, supernova for heavier elements, some of those elements are liquids and solids unlike hydrogen and helium at these temperatures since the big bang, and you have planets like earth. It's a wonderfully poetic realization that we (and everything else in this planet) are made of star stuff. Hope this helps!

@HashSl1ng1ngSlasher 7 месяцев назад

Stardust and gravity ;)

@Krageesh 7 месяцев назад

we know how planets form. You can look it up yourself :)

@johndoh5182 7 месяцев назад

You want to watch ANOTHER series. I'd suggest History of the Universe or things of that nature. Minds that try to solve are better than minds that accept fantasy as the answer for everything.

@PaulaBean 7 месяцев назад

God whispered it into existence, magically.

@tonyburton419 7 месяцев назад

One huge consequential mistake....

@WEB3funnys 7 месяцев назад

funny animation

@FLYBOY123456789 7 месяцев назад

well, so much for adam and eve...

@KarthikMonarch-gj5zl 7 месяцев назад

First Comment 😇

@nebulan 7 месяцев назад

Humans are last minute 😅

@Captivatingclips1 7 месяцев назад

When you are in higher studies,there is so much disagreement among the academics

@CortanaCH 7 месяцев назад

Is Doctor Sammy a real doctor?

@ashleypritchard1582 7 месяцев назад

yes. PhD from University of Maryland. Don't be lazy.

@--..-...-..-.--.... 7 месяцев назад

Sammy has a Ph.D in entomology. Not a doctor doctor

@CommieHunter7 7 месяцев назад

Yes.

@user-lk7cl8vd2q 7 месяцев назад

Yes, he is. He has PhD in entomology.

@jakariashafin1695 7 месяцев назад

Neat I am first to comment.

@ObsidianCre3per 6 месяцев назад

how are you this smart????

@Kostaheinrich467 7 месяцев назад

No one knows how the world started and I guess no one will know how it ends right???

@NEWNESS_VIBE 6 месяцев назад

Footage not found 😂😂😂😂😂😂

@paulrobert3325 7 месяцев назад

FIRST 🥇

@gigachad1817 7 месяцев назад

Thank you God for creating such an elegant well fine-tunned univers

@RastamanLiveUp 7 месяцев назад

Should be: how we think life began.

@samwill7259 7 месяцев назад

No. How we KNOW life began. This is what we've found given the evidence.

@Mr.Anders0n_ 7 месяцев назад

There's no room for doubt with such a sensitive topic

@johndoh5182 7 месяцев назад

Yes of course. Any discussion that goes back a few billion years is theory, and sometimes it's not even established theory (assuming you understand what the definition is for "theory" in the world of science). As we learn more and more, we establish more theory. Theory is never FACT. That's the nature of science. When YOU are watching a scientific based video this is implied and a narrator is never going to keep saying "we think". It's up to the viewer to understand the concept of science.

@michaelmayhem350 7 месяцев назад

I want to help keep crash course free forever for everyone but if I join patreon crahs course is no longer free for me as I'm now paying for it and I'm part of everyone

@--..-...-..-.--.... 7 месяцев назад

But you take part in making free for those who can not afford to give money. You are, in a sense, being selfless to help others who learn a lot from these videos

@emircanerkul 7 месяцев назад

كُنْ فَيَكُونُ

@diegoangulo370 7 месяцев назад

Very altruistic RU-vid channel

@vesuvandoppelganger 3 месяца назад

How did life begin? The creator went... Poof! 🐂 Poof! 🦙 Poof! 🦃 Etc......

@bsfbestshortfilmsonyoutube 7 месяцев назад

Holy Lord God from heaven 🙌 thank you for using your energy to create life so perfectly splendid ✨️ 🙌 💖

@theophelimity 7 месяцев назад

So goes the theory! Not an established fact.

@--..-...-..-.--.... 7 месяцев назад

Maybe Google the the definition of a scientific theory..

@michealwestfall8544 7 месяцев назад

Theories are the explanation of established facts. The one with the least amount of assumptions made and can be vertified in experiments is usually deemed the correct one. If you can't test a theory or make predictions with it, it's not really useful and deemed wrong.

@Songbird645 7 месяцев назад

Theory not always means hypothesis.

@samwill7259 7 месяцев назад

No, no, it's a fact. It's the best, most provable version we've got thus far.

@user-rv7kb1cc7l 7 месяцев назад

English Oxford Dictionary. Theory sense 1 through experimentation and observation excepted as the known FACTS !!

@spencerderosier6649 7 месяцев назад

Free Palestine 🇵🇸

@GurpreetSingh-ur2pm 7 месяцев назад

great we have a sense of how animals change, and even began. but why? that is an answer current science it too stubborn to answer.

@joshuaalexanderjohns 7 месяцев назад

There's the causal "why" and the purpose "why." The scientific method isn't designed for determining the purpose of something, but it is incredibly effective at determining the conditions that result in a repeatable effect. Science has been used to understand the chemistry that builds proteins and the proteins that build DNA and the DNA that builds cells. It is incredibly well understood the causal "why" life exists. If you want to know the purpose of "why" life exists, science never promised that.

@samwill7259 7 месяцев назад

There is no why. Life perpetuates itself because that is what it does. It requires no purpose

@PaulaBean 7 месяцев назад

Science isn't interested in 'why', only in the 'how'.