The Search for the Earliest Life

I wouldn't be surprised if Cyanobacteria actually existed during the late Hadean era - if those samples are much older, it could just be prebiotics that started to form, thus they would have taken on the same isotope ratio we still use today when it comes to handling and incorporating Carbon atoms into cells. As for why that ratio, we're basically just allergic to radioactive stuff (even though we tolerate some of it like Potassium and Calcium which is obviously unavoidable).

Life itself is just a mysterious and weird subject, especially when you discuss about the "HOW", like how did the life start to exist on hellscape of a planet much earlier in the history of Earth.

“And if an asteroid crashed into us, that wasn’t a big deal—that was just Tuesday” 💀🤣

The evolution of the brain.

I'm extremely curious what the implications of this are for the RNA world hypothesis

So when i eat animals does that make me a cannibal?

We are getting closer and closer to having the theory of panspermia being the only option for how life arose.

Interesting subject but, to give a like, I have to hear the narrator actually talking like an adult.

Our planet just REALLY, REALLY, REEEAAAALLY wanted to be alive, and stay that way. Yeesh! Very cool...or, ya know, overwhelmingly hot.

Love this channel. Always grinning from ear to ear when a new episode drops

I'd like to see a few episodes about abiogenesis.

Well cyanobacteria are pretty "advanced" for bacteria standars, so obviously life is way older than those oldest fosiles

The implications of life existing in the Hadean are enormous. It would mean that life emerged basically as soon as it was possible -- implying that life might be ubiquitous in the universe.

If we can trace way-way back to the LUCA and find the evolution of genetic survival machines how did this LUCA become cyanobacteria, then eukaryotes, then us? No wonder we find it so hard to wrap our minds around it.

The most unlikely thing, after 4 billion years, is sitting here looking at yt.

I STILL REMEMBER THAT DAY WALKING ON SOLD HOT ROCK 🤣

When I found this channel a year ago I didn't think I would this much about life on our planet. You guys do an amazing work.

Did you know… that I put videos with Blake on playback speed of .75 so I can keep up with him? Does he really talk that fats or do you edit him to squeeze all that info into one 6 min video? So much info and hilarity condensed together I have to watch several times. Amazing. Love every single one.

Earth is the coolest planet ever !

👋 hi! How do they think the biogenetic carbon got inside the diamond like rock?

I found it!

Robin Wilson

I would never have thought that life began so early. How about a video on sharks

what existed before life as complex as bacteria ..
Water, Soil, Carbon, Hydrogen and some static current.. thats main ingredient of basic organic compound ..

ha! ok, ian Malcolm. "life finds a way"
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Looks like someone found the remains of Cthulu's poo.

The big question that remains is, where did all those Cyanobacteria come from?

I'm not buying life before 4 billion yrs ago!

What about "extremophiles" life forms that lives close to volacnoes or even deep into Earth's crust, where pressure and temperature are crushing and nutriments are rare ? Aren't these another clue to what could the earliest life forms be like ?
Great video, really educative as well as entertaining ! <3

Life exists where we don't consider it as" being "life, aswe know it".: Fumeroles demonstrate vthis.

There was no life on Earth 3.5 billion to 4 billion years ago. The planet was still in the process of forming at that time. It should first and foremost be mentioned that life is usually formulated and IMPLANTED by Celestial Beings on an inhabitable sphere. They are called Life Carriers. 600 million years ago a projected sodium chloride pattern of life was introduced, but could not be done until the ocean waters had become sufficiently briny. All ancestral life, vegetable and animal, evolved in a salt solution habitat. All life-forms need salt in order to survive. In our case, 550 million years ago, life was formulated right here on the planet by the Life Carriers; there was an Australian, African, and North American implantation in the hospitable waters of the realm, resulting in different life-forms. 500 million years ago, primitive marine vegetable life was well-established on our world, just after the breakup of the gigantic single continent, Pangea, sending the unique life-forms their separate ways. And so it is, that life has been around for only 500 million years, not 3.5 to 4 billion years.

The scene with the greenish blackish mats of bacteria in the ocean under a clear blue sky makes me wonder 1) what was the color of the sky back then, since there was much less oxygen (same amount of nitrogen?) 2) could you do an eons episode about the color of the sky back then (or then and as the earth changed)?

Does the neutron sneak in or is a proton knocked out of nitrogen?

So maybe there is life on Mars NOW.

It seems that the ratio of C13 to C12 isn't 25 percent lower in biogenic carbon, but rather 25 permille, which is a factor of 10 different. That's at least according to the paper I found on the zircon crystals containing biogenic carbon

How would water act if gravity were significantly lower?

Sir where are you from coz same wavelength about life.. I think exactly but okay let seee..but I don't know anything about you just commenting by seeing you videos

this was a very interesting video. I always love how Eons makes me think but using Chemistry to unlock archeological finds makes it so clear; until we combine the sciences into our overall understanding of life on this crazy rock, we are only looking at slivers of info. good work. please keep it going.

Could those zircons have actually been implanted on earth by asteroid or comet impacts at that time, rather than created on earth, confirming that life actually started off-world?

Ah yes the main 4 types of life:
You
Trees
Bacteria
Wild....abeasts???

Were I the only one, who thought he was gonna say some along the line's of;
"Almost all living things use carbon (You, Me, Trees, bakteria, Wil.. -liam)"
I almost thought "Who in the world is William?"

The reference.

Is this confirmed by now?

This gives a very good chance that life ever developed on Mars, where the environment was far more hospitable than the one existing on our ancient Earth. But finding evidence of it with a few dozen sophisticated robots in the next future might be a question of chance as well...

How did those long necked dinosaurs keep their throats moist? I mean they had to eat tons of vegetation all day long, every day. All of that ruffage going down must have scoured the esophagus pretty clean and dry. Where would all of the water to swallow with have come from? It is a long way up a forty foot neck in some cases and I doubt if even if all of the blood pumped to the brain was swallowed that it could have kept up with the demand. These animals must have had very, very tough throats. Just asking here.

Does the mars rover look for these carbon ratios ?
Maybe you can do a video on the different devices on the rovers used to look for life past/present.

Yo, that shirt doesn't fit him. I feel his pain but damn, someone on set should've said something!

I can't find my pen yesterday I used, and you are talking about Billions of years ago.

We do not know for sure how planets form, but if the current accretion disc around stars model is correct, the planets might not be created that hot but become hot during condensing and layering and heating through friction (look at heat generated by flexing in some of the moons of Jupiter). There may be other processes which heat planets when they reach a certain size. The model of a planet of boiling magma may not be correct.