Anaerobe to Aerobe- How Oxygen Changed Life on Earth Forever | GEO GIRL

[@jeffk8019]

Great video Geo Girl! I don't comment on videos too often but I needed to tell you many in the audience really appreciate the detailed explanations. Please keep up the good work. I'm a chemist by profession and this was fascinating.

[@GEOGIRL]

Wow! It is such an honor to get such a complimentary comment from a real chemist, thank you! I have always love chemistry and am working on my PhD in biogeochemistry right now, but I have been trained as a geologist first and foremost, so chemistry has come a bit harder to me. That's why it is so nice for me to have you watching and validating my videos, thank you! :)

[@jeffk8019]

@@GEOGIRL My pleasure! I hope your channel grows leaps and bounds.

[@tedetienne7639]

For most videos, you’re “GEO GIRL”. For this one, you’re “GOE GIRL”. Very well done!

[@GEOGIRL]

I love that 'GOE GIRL' haha! Thank you :D

[@lethargogpeterson4083]

Thank you for the simple summary of reduction, oxidation, and electron donors at @2:25. It is appreciated.

[@raihanulhaider6601]

As you said in your latest microbs video that it's your favourite one, I watched it togatger with redox tower video. So vivid presentation. About a month ago i looked up google about what is the biggest and smallest piece of rock out of curiosity. that search brought me to geo girl. By now almost all videos your channel is watched. It feels like i see the world meaningfull. Gratitude.

[@GEOGIRL]

Wow that is awesome, thank you so much for the comment and for giving the microbe videos a watch! Most of my audience doesn't like the microbe videos as much haha ;)

[@raihanulhaider6601]

@@GEOGIRL Most audience collect and enjoy additional information in respective field. I am not exception either. :)

[@ManguKing]

I am utterly impressed by how you are creating a channel based on knowledge and just proper information. You could have gone the easy route of using your beuty to gain a ton of simps fast, but you choose your own path. I tip my hat

[@GEOGIRL]

Thank you! haha I appreciate that you appreciate my information based approach ;)

[@stevenbaumann8692]

As you know I study mostly the Paleoproterozoic and the bounding 200 million years or so. But I’m a tectonic /structural / geochronology guy. I know nothing about life. So I appreciate your videos.

[@GEOGIRL]

Oh thank you! Well I appreciate what your knowledge on tectonics/structure because that is definitely not my strength hahaha

[@mariodegroote6756]

all those little hard working nameles heroes, a fitting honouring with proper respect, hard work, amazing world we live in, and more amazing how it came to be like how it is.

[@GEOGIRL]

You give me too much credit😊 Thank you so much for the support and kind words!

[@PedroBigeriego]

Another great video Rachel, thank you! When I think about Evolution by Natural Selection cannot find a better example as when the Earths atmosphere and oceans changed from reductant to oxidant. The environmental rules on the whole Planet changed so dramatically that drove new adaptations to evolve (or be pre-adapted) and take advantage of the new oxygenic conditions...otherwise be relegated to anoxic niches...or perish for ever!

[@viaman1386]

It's sad how not too many watching your great videos, I subscribed and I hitted the like button *.*

[@GEOGIRL]

Thank you for the support! I hope in time more will come and hopefully learn from these videos, but in the meantime I am just grateful to have such a wonderfully engaged audience :D

[@oisnowy5368]

I find it pretty logical that protective enzymes predate respiration; after all oxygen was released in chemical reactions. That oxygen doesn't magically leave the lifeforms that freed it up chemically. Those lifeforms still had to deal with getting rid of the oxygen.

[@BillySugger1965]

Wow! I’ve been waiting for a good video on the GOE. Thank you!

[@Smilo-the-Sabertooth]

The topic of this video just reminds me of the song “The Air that I Breath” by The Hollies, a really beautiful song. Oh the crazy changes that life goes through in this big crazy world, it’s nothing short of remarkable. 🌎💚🌍💙🌏

[@GEOGIRL]

Couldn't agree more! With every video I do, I become more impressed with Earth and life on Earth and just everthing that has happened on this amazing planet! I thought eventually my passion for this topic may wane, but it has only grown!

[@Smilo-the-Sabertooth]

@@GEOGIRL Very true and I personally believe that there is no better place to learn more about this big amazing planet than here with you and your always outstanding and never disappointing videos on your incredible educational channel. You really are the best, my favorite teacher and friend. 😉❤️😊👍

[@Smilo-the-Sabertooth]

@@GEOGIRL Oh and by the way, Happy 4th of July my friend!!! 🎆🎇

[@hdufort]

Another great subject (and very nice visually) is how the GOE kickstarted mineral evolution on the earth's crust. Nearly half the minerals that exist today didn't exist before the GOE. This was a radical change in chemistry, and not just for lifeforms! In a way, life is responsible for the existence of the most exquisite minerals, that formed due to the water-oxygen chemistry.

[@GEOGIRL]

Oh yea! That's a great topic for a video! Especially for a Geo channel, can't believe I haven't made that video yet haha! Thanks ;D

[@caspasesumo]

Awesome video! I didn't realize how long I've been waiting for such a great explanation of this Oxygen good guy/bad guy story. Thank you so much for making it available to us. Do you think crustal formation played any role in Biome diversification?

[@GEOGIRL]

You are very welcome! And Oooo what a good question! I will have to look into that, I have no idea, but my gut is telling me yes, probably! haha I think that will make a great video, thanks for that idea :D

[@donaldbrizzolara7720]

Indeed oxygen is good and at present its just the right balance for our atmosphere, but, hypothetically, what if it were to increase, say doubled, what impact would that have for life on earth? Excellent video Rachel!

[@GEOGIRL]

What an intriguing question! I have thought about this before but never enough to look into a potential answer, this would make an excellent video assuming I can find enough concrete research and answers on it haha, thanks for the comment!

[@yancgc5098]

Plants and Cyanobacteria would have to go crazy with oxygen production and carbon burial with plants and soil specifically, to a point where CO2 levels would be the lowest it’s ever have been, causing a Snowball Earth period or at the very least a Carboniferous Rainforest collapse 2.0 Too much oxygen is bad, too much CO2 is bad. I’d say 21% oxygen and 350 ppm of CO2 is the perfect balance imo.

[@sagartimalsina1776]

I love geo girl❤️

[@georgefspicka5483]

Hi Rachael : ) I'm only now just catching up with this presentation. Like times before, I already knew a little about what was going on, but you've overwhelmed me many tons worth of information, which is good for me, because I can always go back and review. What puzzles me, is that with a 90% rate, this has to be one of Earth's greatest extinction events, but it seems to always get omitted when people talk about the "Big Five." Do you think it's because they can't count any higher? ; ) If we do count it, we have six major events. If the predicted Anthropocene Extinction comes to pass, then there will be seven!

[@Beastclub679]

Very nice video..👌👌🙃🙃

[@GEOGIRL]

Thank you! I really enjoyed making this one, it's such a interdisciplinary topic :D I am glad you enjoyed it!

[@Beastclub679]

@@GEOGIRL most welcome..🙃🙃

[@AnnoyingNewslettersPage6]

Dr. Strange[life] or: How I Learned to Stop Worrying and Love [Oxygen]

[@romanregman1469]

Awaiting the day when Fluoride -based life arises. Imagine how much more fun life would be on the Ultimate fluori/oxy -dation agent?

[@a.randomjack6661]

It's a really complex evolution from inert matter to Life, and even moreover to complex life... I wonder how improbable this all is. Merci Geo Girl et bon dimanche.

[@GEOGIRL]

De rien! Thanks for the comment and kind wishes! ;)

[@scambammer6102]

well it happened so very probable

[@FloozieOne]

I'm afraid this episode dealt with too much chemistry for me. I got most of the basic ideas but the processes that caused the changes were beyond me. Still, from what I did get this was very interesting. I knew that O2 killed the anaerobic life but I didn't know the details, so thanks for giving me the info to work with.

[@thomassimmer5186]

Love your show. The concept of a reducing environment shaping life from the beginning is challenged by Nick Lane. He notes that UV light hitting water leads to H2O2 and molecular hydrogen. Much of the hydrogen is lost from the atmosphere and reactive forms of oxygen form an important part of the environment. Admittedly, it wouldn't have affected life in the vents, but need for antioxidant enzymes was a very early requirement as life expanded beyond the vents. Photosynthesis would have died from their own oxygen production if they didn't already have the capacity to manage it. I am not an expert and may have gotten this wrong.

[@edmolash3401]

Your ability to talk nonstop for so long is amazing.

[@hattereggburn9279]

Nice informative video, thanks! There’s a recent paper that shows two big jumps in oxygen in the history of earth’s atmosphere, both happening at global glaciations. Archaean very low O2 levels stepped up at the Huronian glaciation 2.5 billion years ago to late Proterozoic levels and again at the Cryogenian 800-600 million years ago, to reach the present level of 21% The paper also shows how between these step ups due to snowball earth glaciation, O2 is kept at stable plateau levels by feedbacks and emergent homeostasis. Anyway - see what you think: Laakso TA, Schrag DP. Geobiology 2017 May;15(3):366-384.

[@lynsmith3154]

A little confusion for me: You had SRB in the text without ever seemingly identifying it. Some time later it was verbally identified as Sulphate Reducing Bacteria.

[@GEOGIRL]

Sorry, I should've written it on the slide, I just said it verbally when I first showed them at 2:12, but next time I'll write it out! ;)

[@NlKl420]

So good 😮🌈

[@GEOGIRL]

Thank you! ;D

[@barryfennell9723]

a cool video would be an explanation of gasses and temperature in a stagnant model and compare it to you atmospheric cycling of water and salt.

[@girishkumarverma5863]

Beautiful

[@tonytaskforce3465]

If the Good Lord had meant us to breath oxygen, he would have given us lungs.

[@JessiV111]

I was just wondering , Doesn’t the Bible say something about the devil being the prince of air ? I’m not like an expert or anything but j find it interesting 🤨 Oxygen being this big change The devil being the prince of air . Curious connection

[@Get_to_the_Point]

I love O2 ! My compost decomposes more quickly with O2 also (o: But this vid was a little over my head )o:

[@GEOGIRL]

Haha, I apologize, this one was a bit more advanced than I go with my normal historical geology videos

[@Get_to_the_Point]

@@GEOGIRL lol

[@hoibsh21]

Love is like Oxygen You get too much you get too high. Not enough and yr gonna die Love gets you high!

[@scambammer6102]

Sweet! Finally something I understand.

[@princeshukla7661]

Love from INDIA

[@1ntwndrboy198]

Isn't it oxygen that's up in our atmosphere that protects us from all the real strong radiation from space? Would this not affect life on Earth?

[@GEOGIRL]

It absolutely would, that's why all life lived under the protection of water early on, then once enough oxygen was produced to form ozone, life could live unprotected at Earth's surface. Some bacteria, however, had already adapted ways to protect themselves from UV radiation on the surface of early Earth, such as secreting mineral coverings that absorbed the UV light, which I talk about in my biomineralization videos :)

[@tosehoed123]

@@GEOGIRL cool defense mechanism

[@GEOGIRL]

@@tosehoed123 I know right!

[@nickb-whistler4431]

Ghost-faced seas, shards of ice, globe of snow gripped by white, Winter wrought rotten waves, rosen-wrot Edelweiss, Edel wrote saddest prose-prose begat endless night, Endless night came to be well-writ but not concise; Mother Earth suffered long, along with all her Life, Through the rigid Winter’s Song, strung with Goddess Strife, So all things good were brief, and all brief things were wise. - From the epic poem The Lostories

[@1ntwndrboy198]

Well from what I understand there are humic and fulvic acid that are biomass that has degraded to its fullest extent. It has the ability to carry the anion and cat ions to fungi and plant life making it a catalyst between the two symbiotic relationships this would not occur until there was enough bio Life to biodegrade that far. Thus making it take a lot longer than we would see in today's world.

[@johnvl6358]

❤

[@JoesFirewoodVideos]

I hate Oxygen I ❤️ GEO GIRL

[@GEOGIRL]

Oh no! Why hate oxygen?? haha

[@edgeofsanity9111]

Ok, cool But what about archaea? Where did they stand in all this? Have they suffered from this event in any way? Did halobacteria exist already to contribute to this? Or any other oxygen emitting archaea?

[@Beastclub679]

Hii geo girl

[@vinigretzky97]

Really nice to listen to as a podcast. Have been looking some time for something accessible yet educating and this perfectly fits my knowledge deficits. Would love to hear your voice a bit better, though. Any chance of an equipment upgrade in the future?

[@Beastclub679]

How are you?

[@GEOGIRL]

I am doing great, you? ;)

[@Beastclub679]

@@GEOGIRLiam very well .. 🙃🙃

[@princeshukla7661]

Hello geo girl

[@mp-qh1um]

do you exists? beautiful with a outstanding brain and like to share, now i m fulfilled:)

[@JessiV111]

Isn’t this Biblical ?

[@princeshukla7661]

How are you ?

[@GEOGIRL]

Hi there! I am doing very well, you? :)

[@princeshukla7661]

@@GEOGIRL everything is f9