i love how dave could easily just churn out “flat earth debunked” videos and get millions of views but he stays committed to educating his subscribers in almost every subject.

When I was in 2nd grade, in the 1960s, I asked my teacher if Africa and South America were once joined. She told me it was a coincidence. Little did I know I was a pioneer in plate tectonics, which was also validated in the 1960s.

I’m currently studying Geology at my university so I’m really excited to see this series to test myself on what I’ve really picked up. Also it’d be great to see a video on planetary geology!

I fully expect you to go into detail on how the earth flattened out in future segments in this series.

I find early earth history super fascinating. Wish I had the time to take more classes like this outside my engineering courses. Stoked af to see this series play out

Now those were the days let me tell you

Holy crap im so excited for this series thank you for keeping the knowledge output so damn consistent mr dave

It's always mind boggling for me to think about how even the most simple of animals that we have today were comparatively insanely complex for early earth.

This guy is the best. I've lost my relationship with my father and brother due to the flat Earth hoax. Most flat earthers are absolutely die hard into their fanatic beliefs. It's nice to look up to professor Dave for some solace and mental stability

It's pretty surprising how fast life emerged, great video as always!

my GOSH, this is SAVING me!! As a second semester Geoscience student, I will be writing an exam on all of history of the earth and life in about 5 weeks. Having all of the stuff lined up like this in the right order and with just the most important events is really helping me to put it all into perspective. Thank you!!

This is truly the best science related content on the web. Professor Dave will be remembered as being among the likes of Neal Degrasse Tyson, Carl Sagan, and Albert Einstein.

Preserving and proliferating scientific knowledge to future generations is the noblest thing you can do for our evolution as a species. Thank you Dave! In love with this series and the ones about biology, zoology and astronomy as well. Keep up the amazing work!

👏🙂 Amazing video Professor Dave I loved reading about this when I was a kid.

Geology is deeply interesting. I'm a sucker for structures and systems of almost incomprehensible scale - geology is almost like a cosmology of our homeworld. Gigantic things happening over billions of years (a number already incomprehensible to our brain) is just an infinite source of fascination for me.

Excellent, well done and presented without being needlessly complex.

I find all of your videos fascinating but this is my most anticipated topic, thank so much for all your videos and hard work. You're awesome sir!

Even though I know all of this, I really enjoyed it, felt like a kid again having fun and learning. Hands down best youtube channel.

So your saying Kent Hovind is lying about the six thousand year old Earth? Oh I forgot, you crushed him.

I've been fortunate enough to visit a site in Western Australia, where there is a large area of stromatolites. It was amazing to see such ancient living structures.

Taking first year earth science. Just to note, I have learnt a lot about geology from understanding the origin of the solar system and the geological processes on Mars. Perhaps if you could cover those topics, it could bolster the content of the series, which I am thoroughly enjoying. This is great revision for me

Simpel yet full of information. You are by far the best at explaining about history of earth. Love from Finland.

Happy this video was recommended to me by the algorithm. I've enjoyed your debunking videos and now I'm looking forward to watching every playlist of tutorials! I didn't know they would be this good. Thanks for all your effort Dave.

7:07 the fact that the sky used to be orange and green is fascinating. I can understand that different atmospheric gasses could produce different sky colors makes sense, but how could it have been two different colors? What factors would have caused it to be orange, and what would have caused it to be green?

I'm 40 and I still, from time to time, pause for a few minutes in the evening to think about a billion years. How absolutely freakishly long time that is.

Gosh. And here was me, thinking the Earth was only 6,000 years old, flat, and with a dome over it, and the moon and sun are both so close I can almost reach up and snag them out of the sky with my bare hands. Professor Dave, you've completely destroyed my world view.

Probably my favorite series Dave has done, I find this stuff so interesting

9:56 Wow, that's animals & stuff. But we're still in the ocean, hey, can we go on land?

This is gonna be awsome

As a Montessorian trying to learn the Clock of Eras, this is very helpful!

This is veritasium's level of quality. So glad I discovered this channel.

best intro on youtube

I am so grateful for this very brief video, but packed with information. I need to take notes so I can find detail on some stuff. I look at the billions of years from a historian's point of view and want to tell stories based on the best science I can find.

I'm sure Mr. Hovind will have something to say about this, completely wrong of course but that won't stop his lips from flapping. 😁👍

Professor Dave and Erika have a lot in common in regards to teaching basic biology to non-academic types (like myself). But... Dave's videos are a little too short, and Erika's videos are a little too long. But I learn so much from both of them. You are appreciated more than you know. Cheers!

Excellent content! When I took collegiate geology courses in the mid 1970s everything before the start of the cambrian epoch was just called “Precambrian” although I do remember some discussion of what would become the hadean, archaean, and proterozoic. Cool stuff! Will watch the rest of this series as well!

Our own planet’s history is a cautionary tale when searching for extraterrestrial life. The scale used in the video isn’t done to proportion, otherwise the topmost (and interesting) part would be small, and the part where life existed only as single celled organisms would be most of the picture. Out of more than 4.5 Billion years since Earth’s formation, complex life was pretty much absent for MOST of that time. If we fit the history of our planet into a 24-hour day, using 4.5 billion years as a round number, an hour represents 187.5 million years. A minute represents 3.125 million years, and a second represents 52,083.3 years. Complex animal life shows up after 9 pm (21:00). Hominids show up around 11:57 pm (23:57), and humans show up somewhere around three seconds before midnight (23:59:57), with modern technology showing up a few 1,000ths of a second before midnight. (1/1,000th of a second is roughly 52 years on this scale.) It took a long time to go from unicellular life to multicellular life. Obviously, evolution was chugging along, doing something during some 3 billion years - but we don’t know what was happening except the time when the oxidation event happened. I hope we can develop new techniques which will shed some light on this missing chapter of evolution. It is a bit like missing the invention of levers, wheels, and screws but then suddenly there are steam locomotives everywhere.

I love how creationists avoid early development of earth and the early era's/periods of earth especially the animals like the plague lol. Bcuz it goes against all their claims and they can't back them up.

Wow, would love to see more geology on the channel. Very good videos

“That’s cool and all, but….were you _there_ ?” - Ken Ham

Very informative easy to follow and perfect talking speed and enunciation

Extremely fascinating as well as mind boggling.

FINALLY videos about the history of earth Love that topic

Hi,Professor dave. It's so fascinating how when i watched this video, it was like i was in a fantasy world. It's just incredible...

I'm really glad that Dave made the video 11min11sec to create a higher vibrational energy.

sooo hyped for this geology series!!

Theia hitting us did a number of very good things for Planet Earth. It's thought to have almost doubled our core size, creating the long lasting dynamo that powers our magnetosphere. Without which, the Sun would have already ripped the atmosphere from our world. Mars, with a much smaller core, has already lost its air envelope because its dynamo shut down eons ago. It also gave us our Moon. Much larger in comparison to any other moon/planet combination in the solar system. It provides the stability we need for regular seasons. Mars also swings wildly due to the tugs of its 2 smaller moons.

very good, should be nice with a list of sources so you can use the videos in school work

i love you dave! Really! Your passion for teaching is really great! you also speak at the perfect pace, I really feel like I am comprehending everything you say. occasionally though, I will do a little rewind when things get a bit dense! It makes me so happy to see everyone else in the comments brimming with fervor and devotion for the pursuit of this info! So great.... :)

I have a hell of a time remembering the eon's, thanks for the reminder.

I like the video, it was very well explained, but you forgot to include the formation of the outer core which was 2 billion years ago.

very good. you should let all the earth science, geology, & biology teachers know about this, it's great. of course paleontology too.

Yay i love learning about this stuff!

Real talk. You ARE the Professor

Beautiful, beautiful artwork. Was interested in early evolution for alot of years.

We often throw around numbers like a million or a billion but both are almost impossible to grasp without math. So here's an attempt to bring them into something we can try to "get". Fasten your seatbelt... Imagine you start counting at a rate of 3 numbers per second... 1, 2, 3, 4, 5.... a manageable rate. Forget about saying numbers out loud but keep going at that rate without stopping for anything (like sleeping or eating). I've done the math. You'd get to one thousand after 330 seconds or five and a half minutes. You'd get to a million in 3.8 days. You'd get to a a billion in ten and a half years counting 3 numbers per second, 24 hours a day. Now consider that EVERY ONE of those numbers at 3 per second is a WHOLE YEAR. That's a billion years. Do that three and a half times. That would take 36.6 years or about half a life time. Life has been evolving for that many years, each reproduction being a similar but subtly different version of its parent all competing for limited resources. Is it any surprise that after that amount of time, we see what we see around us now? If you dispute that life has been evolving for that long then you're simply wrong (and undoubtedly religious). And while we're at blowing our minds, we know that our galaxy, the Milky Way, has about 100 billion stars in it. Don't bother to fine tune my claims, it's irrelevant to this discussion and it's approximately correct. The speed of light is so fast that it could circle the Earth 5 times in 1 second! At that unbelievable speed, the NEAREST STAR would take 4 years to get to! THE NEAREST STAR out of 100 billion! Now consider that we can see hundreds of billion galaxies and there are more that we can't see because of the speed of light limitation. Each one will have billions of stars. With that in mind tell me that you think a god created the Universe just for us. On a side note what do you think the odds are that there isn't any other intelligent life out there? We may never meet them because they're so far away but if we do then that means there's a fundamental law of physics we haven't yet discovered that gets around the speed of light limitation set forth by Einstein and which has never been shown to be wrong.

おはようございます

so simple but well explaine in just over 10 minutes

What marks a boundary between eons/periods? How do we define the end of one eon/period and beggining of next? With the end of Mezozoik it is easy, but with others?

Please can you make a video on the catastrophism and big band theory

I love learning this kind of stuff wish I had more of this in school

It's crazy to think that many people that know little to nothing about science. Believe the earth to be 6,000 yrs old.

Why am I starting my late morning with this?

I enjoyed this presentation. Thanks ! Could you talk about the last million years and how the earth's temperature was mostly cold, with 10,000 year periods of hot weather every 100,000 years, and how the earth is in one of the 10,000 year hot periods just now, and how that fits in with global warming ?

Tutorials on earth plus everything on it, in it, or around it. Lol Thanks Dave

Your videos are very useful and I thank you. Could I be cheeky and request that you do some videos on vectors and matrices and also calculating energies in different kinds of chemical bonds, distance between atoms etc. Thankyou. I don't have any money but if we ever meet I shall pay you in kind X

I'm (re)learning math with professor Dave, why not some geology too?

This was a great brief intro, but would you expand on how the Earth gathered/created/collected so much water please?

Minor issue: current thinking about the mechanics of plate motion is that “slab pull” is a major driver.

Curious about the 4.57B number... could you please go over the actual original formation of the mass of the proto-planet or whatever? Was it just a long period of coalescence of dust/matter/heavier elements produced by the sun? Where does the specific number of 4.57B come from?

Hey Dave. Loving your content. You are doing the best job of proper video essay that I have seen. I was looking for other content and found young earth creationism that love to use The Grand Canyon, in particular Coconino Sandstone as proof.

I kinda want you as my science teacher, you discussing it made me understand more, than my science teachers

Why was the water there in the Archaen? Where did the water come from, or what conditions made it form?? (Sorry if this is a silly question, I’m new to all this but find it absolutely fascinating 🧐)

Imagine if we are slowly moving forward a new Hadean Eon. The Earth's lifetime will end just the same way it started. And then she will just be a gigantic boulder cirkling around the sun (which by the way would be dying). Earth would look like the moon but much bigger and maybe less...round....

If I could subscribe twice I would. Really excited about this series!

Hey almost 3 mil good for you bro 🎉🎉

Excellent work. Thank you very much.

Thank you for this excellence.

This guy knows a lot about the science stuff!!!

Oh yes! This will be great!🧠🥳 I can see some YECs losing their minds! 🤣😂🤣 You are definitely getting whacked again! 🤣😹🤣😂🤣😹🤣 Thanks! ✌️💘🤘🖖

Thanks Sir from India...

You make amazing content

The full of Scotland is a craton!! Cool to know I'm living on some of earth's oldest rocks..

At this point of time I'm almost convinced he is spying on me, I mean like, when ever a new chapter starts in my class he get it's videos within a day or two 🤨🤔

7:27 I got so mad when the organelles didn’t bounce off the edge of the screen like the DVD logo 😡

Did you mention where the water came from?

If I could make a family reunion of each and every of my ancestors living during say, one specific moment in time during the cambrian explosion, what would it look like, and how would they be related to each others ?

My ears are still ringing from that Cambrian explosion!

Professor Dave - I just got turned onto the flat earth videos and loved how snarky they are. Would love to see more humorous content

Good presentation. Isn't the Western Australian craton a remnant of the Hadean Eon?

Thanks Dave!

idk man... the only thing i knew is that, mitochondria is the powerhouse of the cell

love the content... but would love to see citations at the end of the videos or in the descriptions.

I let all my students watch this series, especially who are studying earth science.

This was awesome. Thank you!

Just think, in a few thousand years, (or less), we may be back to the prokaryotic stage!

awesome work mate

thank you for covering this dave. way more complicated yet interesting than the genesis story from the bible.

Thank you.

8:16 To help the audience understand Evolutionary Theory, I would avoid using language that suggests agency in the process.