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Oklo, the Two Billion Year Old Nuclear Reactor

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SciShow takes you to a uranium deposit in Africa where, eons ago, a unique set of conditions came together to form the world’s only known natural nuclear reactor. Check it out! No radiation suit required! Hosted by: Hank Green ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources:
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Текстовые комментарии (2567)
Staminist (5 дней назад)
I understand we need an 'Occam's razor' when introducing a hypothesis, but WHAT IF there is more to this story?
Emanuel BABA YAGA Ortiz (10 дней назад)
So nuclear waste can just wither away.
citizenschallengeYT (17 дней назад)
Baz DiNova (29 дней назад)
At 0:26, when Hank describes the three isotopes of uranium as "each with a different number of neutrons in its nuclei", he should have said "nucleus." The word "each" is a singular pronoun, referring to a singular noun. Each uranium atom has one nucleus.
Raymond Szczepanik (29 дней назад)
By the way the only reason I knew about Oklo. Was from a video I just watched from like the 1950s that some nuclear scientist stated that there were eight of these naturally occurring reactors kind of f up that I can only find one.
Raymond Szczepanik (29 дней назад)
The primordial soup
Dray Wilks (1 месяц назад)
They refuse to give Africans credit.
MrSkinnyblk (1 месяц назад)
Yall want to know something ?? Yall are the only ones in history that talks about orther civilizations cultures. How can someone trust what yall be saying i mean literally yall tell everything. But not so much about the bible yall take and add mythicle things that most of the. Time there False ?? Well lets talk about jacob and eseau then you will know where we are in history then you people will know how obleak you are to other cultures. Yall are clearly described. In the bible and that spells trouble in my book according to the scriptures. I dont think yall know yalls own history 😒😒😒😒
Shiboline M'Ress (1 месяц назад)
What was the average level of radioactivity produced by the mine? Would it have posed a danger to animals?
Shiboline M'Ress (1 месяц назад)
+Indian mapper Yeeeeup... that's what I get for hearing "million" instead of "billion". Oops... 😊
Indian mapper (1 месяц назад)
Well animals didn't exist back then
Voldymyr Gordiienko (1 месяц назад)
However, don't neutrons hold an atom together and protons try to rip it apart?
Voldymyr Gordiienko (1 месяц назад)
Voldymyr Gordiienko (1 месяц назад)
This video provides lots of great information and really helped me with my research task.
Adam Dennis (2 месяца назад)
With that being said what are the chances the Egyptians. used it some how . Or others throughout time
Jim Woodard (2 месяца назад)
stoutdog (2 месяца назад)
What the f*ck is he talking about that my little brain can't wrap itself around, and why is it relevant?
Marek Marek (2 месяца назад)
calm down, breath, and now start to talk....slowly....
CamycaR700 (2 месяца назад)
Really interesting video, can you also do one regarding the thorium reactor please. Thanks
Ron Romejko (2 месяца назад)
Doesn't the water that you would need have to be incredibly pure to support this reaction ?. Like way more pure than is found naturally?.
Samson Sliteye (2 месяца назад)
could there be a natural nuclear explosion? is that a possibility as well? or is it simply impossible for enough uranium or other elements to collect to a high enough concentration naturally? you would still need some neutron deflectors i suppose? but this too could maybe form naturally?
Kokare Vatten (2 месяца назад)
Thats all cool and all, but what impact will this have on us? Will we start to build our reactors similarly? Or can we take any new information from this that can be applied to other parts of the nuclear science field?
Half House (2 месяца назад)
This explanation assumes that there was plenty of groundwater to control the nuclear reaction. What kind of evidence was found to support that contention about the presence of flowing groundwater?
Crusty Cobs (2 месяца назад)
Classic nerd clickbait
Trevor Reilly (2 месяца назад)
wow this is fantastic....I have to see more about this natural reaction....make another video 😀
A Singh (2 месяца назад)
Einstein can sleep peacefully now! Poor man thought he was the first to invent Nukes! Ha! Mother Nature beat him to it !!
Siggi Pedersen (2 месяца назад)
And the moon is made by cheese
Engineering8 (2 месяца назад)
There's another natural nuclear reactor out there. It's called the Sun.
Indian mapper (1 месяц назад)
They probably mean a fission reactor but the sun undergoes fusion
Jason Ware (2 месяца назад)
that was cool. I had no idea there could be natural nuclear reactors.I wonder how all of the radiation from it affected any life that was near it.
Jess Allen (2 месяца назад)
Why does this make me think of old faithful
Flinders Stokes (2 месяца назад)
na dog not natural. ancient cilivisation
Controlled Strength (2 месяца назад)
Because science and math is just created by humans to study and imitate the patterns of the universe. Therefore, patterns existed long before we even do and things like this is possible without us because we’re the one who need these patterns to exist not nature ;)
tandem compound (3 месяца назад)
can someone handcuff this over active man
William Hutchinson (3 месяца назад)
i thought it was the annunaki.
shyvha beauregard (3 месяца назад)
ecologists be like "u wot negga"
Larry Blanchard (3 месяца назад)
Serendipity IS REAL ! ! ! ! ! don't we all love it Thank you!.
Wellington Gomes dos Santos (3 месяца назад)
Who does nature think it is to use nuclear energy without US permission? We must bring democracy to nature and overthrow this dictator whatever he may be.
News Now Baytown (3 месяца назад)
Anyone dumb enough to believe this idioacricy
Kelvin Broder (3 месяца назад)
But the Tinfoil Hat people... I mean the people at the website Gaia.com said it was extra-testicles... I mean extraterrestrials.
David Kelley (3 месяца назад)
Way cool!
superferrariman (3 месяца назад)
Life in our planet came later.... Does that mean our planet was inhabited by destroyers before that?
Zeyde8 (3 месяца назад)
SciShow should be totally embarrassed by it's otherwise pathetic anti-nuclear stance... when will they wake up and recognize that 30% solar plus 70% nuclear is the only currently viable alternative to fossil fuels. As long as they keep hyping the solar solution as "more than a 30%" solution, they are firmly in the pockets of the fossil fuel solution.
Zerobladetion Wot (3 месяца назад)
Spread the word Boycott Americans good!
Mini Nuke81 (3 месяца назад)
GG Next (3 месяца назад)
It's pretty cool that nature figured out how to build a nuclear reactor before we did, and it's called the Sun.
Valters Plūme (3 месяца назад)
Nature has a completely unlimited amount of surprises.
Valters Plūme (3 месяца назад)
This is the closest thing to Godzilla that has ever existed on Earth.
E (3 месяца назад)
So just need some plutonium for a diy eh!
TrophRBLX (3 месяца назад)
knock knock it's the united states
Itzzben (3 месяца назад)
What the use of that thing
Third time Lucky (3 месяца назад)
The nuclear waste from Oklo is inside Justin Bieber’s brain. He is toxic.
Abdega (4 месяца назад)
so If I were to hypothetically perform a uranium heist, people won’t look too far into it if I make it look natural? *INTERESTING!*
Elu Fullard (4 месяца назад)
Two billion years...that's some straight up BS
Bat Fink (4 месяца назад)
What is magma contained by?
Cortez Hollister (4 месяца назад)
God is amazing
trigger rydir (4 месяца назад)
Dump Trump (4 месяца назад)
Interesting subject, but highly annoying presentation.
AG AG (4 месяца назад)
Yasith Disanayaka (4 месяца назад)
Why was there a MINECRAFT advert?
Ichael Gaming (4 месяца назад)
Actually, it turns out that the dinosaurs mined the uranium and built nuclear bombs and committed war against each other. This is why the dinosaurs died.
Braeden Tiemann (4 месяца назад)
Pip Squek (4 месяца назад)
2billionYr semen..
the real PewDiPie (4 месяца назад)
Ancient tech ! not even today scientist can do it
Johnny Sunday (4 месяца назад)
Sol has that beat.
muklis alisyahab (4 месяца назад)
LOL_amazing34v2 (4 месяца назад)
There was no nuclear reactors 2 billion years ago Words wasnt invented yet 2 billion years ago
venbrou (3 месяца назад)
Technically, the Earth is 4.5 billion years old. Unless you believe that the Earth is only 4000 years old, and that all undeniable evidence against that was placed by the devil to lead good Christians astray.... If you want to believe in a book full of fairy tales, then I can't help you.
trucker dan (4 месяца назад)
Nope, it was aliens, they needed fuel to get back home.
PokiYin (4 месяца назад)
So mother nature just wasted alot of energy . Smh stupid earth
Truong Lam Lo (4 месяца назад)
Turns out god already wanted to nuke us all long ago
Spencer Cook (4 месяца назад)
According to chemistry lessons, the binding of atoms together releases a ton of energy so how is this possible that splitting atoms releases energy
Tyler Amon (4 месяца назад)
What?, Man, Nature figured out people before we have.
adamsauto89 (4 месяца назад)
where there steam turbines that naturally sprung up to convert the heat from the reaction into electricity? if not then nature was just wasting its time ...
Jan Hanchen Michelsen (4 месяца назад)
Radioactive decay in the earth’s crust is very common and of course natural. Of the seven mountains surrounding my hometown of Bergen, Norway contains enough uranium to maintain a core temperature far higher than the other mountains and the possibility of extracting geothermal energy from the mountain has been studied. The downside is radon intrusion into basements etc. This is a known health hazard and must be monitored.
Alan D1 (4 месяца назад)
What happened to all the radiation left behind as from a spent fuel rod. Surely this would have killed off all life and caused poisoned groundwater., which then would have left a decimated landscape for hundreds of miles and cell deformation in all plants and animals resulting in giant lizards. Oh wait, It did. Dinosaurs!
Michelle Koh (4 месяца назад)
woloabel (4 месяца назад)
The Curies developed the isotopic hypothesis having measured places more energized than others across Europe mainly in the northern mountainous region of modern day Germany where there are still significant Uranium deposits. ...
mubashar qadeer (4 месяца назад)
Dude you need to chain down your arms!!
Viper (4 месяца назад)
Depleted Uranium? Biggest Depleted Uranium stockpile in the world?
_SECRET SQUIRREL_ (4 месяца назад)
So what your saying is there were uranium deposits"supposedly" SUPPOSEDLY, In a mine that's actually just a hill and we're all, literally all of us are just guessing if a set of random events happened in a set of random ways Millions upon millions of years ago there was a possibility that a nuclear reaction to begin to take place possibly maybe we're about 3% sure about that definitely
Rup Ganguly (4 месяца назад)
So nature was the first nuclear state , I guess so?
Jonathan Hughes (4 месяца назад)
This guy is a 2 billion year old nuclear reactor my ass.
Your Local Meme Dealer (4 месяца назад)
God dammit Aliens you dun goofed this time.
Romuland Meier (4 месяца назад)
Actually without the natural nuclear reactions inside the earth, our favorite planet would look like mars today.
Terrae (4 месяца назад)
There are no nuclear reactions inside our planet. There is radioactive decay yes, but no sustained reactions like fission or fusion. Also, part of why Mars is dead and cold today is also relative to its smaller size.
Steve Nichols (4 месяца назад)
So, in theory, a natural reactor should form somewhere where the perfectly safe conditions are not present and there should be a nuclear explosion (or at least a major release of nuclear material.) Has this occurred?
Terrae (4 месяца назад)
For the good conditions to enable a self-sustained fission reaction, you need water and oxygen to oxydate the uranium and allow it to get concentrated. No water, not enough concentration and no slow neutrons. So no fission and no chain reaction. A natural nuclear explosion or uncontrolled chain reaction cannot occur.
c0ldw1nd (4 месяца назад)
The reaction stopping when the water starts to boil is basically a safety feature in almost all modern reactors. It's called negative void coefficient.
Mike Bready (4 месяца назад)
Well if people believe that randomness and “nature” took particles and magically made life which randomly populated the earth and developed from fungi into humans, I guess this is slightly easier to believe.
venbrou (3 месяца назад)
Better than believing a magical sky wizard plucked us from the dust, and then an evil magical ground wizard filled the world with fake clues to make us believe that something else happened.
Mike Bready (4 месяца назад)
Terrae nope.
Terrae (4 месяца назад)
You're underestimating the power of time and randomness.
Peter Diggler (4 месяца назад)
Should be labeled "Watch an ugly geek talk about Oklo, the Two Billion Year Old Nuclear Reactor". There's nothing here worth watching. There's other vids that actually tell you how it works without the ugly asf geek boi freaking you out.
Delkor (4 месяца назад)
akupehsluarketatAR (4 месяца назад)
E.T was trying to lit earth and turn it into a sun
dfctomm (4 месяца назад)
nature didn't figure it out. If you've ever seen kudzu climb up a telephone pole and cross a road you might think it was smart, but if you have enough time and resources to try every possible combination then you don't need to be smart.
Wolfspirit (4 месяца назад)
If nature figured out to build a nuclear reactor, in 100 years it could probably build a TIME MACHINE or a PARTICLE ACCELERATOR
Terrae (4 месяца назад)
Technically, a black hole would both be a time machine and a particle accelerator.
Wayne Speer (4 месяца назад)
So was it really natural or signs of a advanced civilization ?
Wayne Speer (4 месяца назад)
Terrae hey you never know. If an advanced civilization used this kind of power don't you think it would be in a way that was some how more in a way that joined it in a natural way.
Terrae (4 месяца назад)
Definitely natural.
Han Solo (4 месяца назад)
so does it mean that there is probably a car created by nature out there :) ?
Terrae (4 месяца назад)
Don't be silly... Of course there is!
Kenneth Janczak (4 месяца назад)
To bad hippie scumbags and green"peas"...... Nuclear is natural..
Terrae (4 месяца назад)
There is a difference between a diffuse reaction in one part of the globe <ith a loooong time passing by to diminish the byproducts of nuclear fission, and hundreds of nuclear reactor working on very concentrated fissile compounds and making wastes that we don't know what to do with. I'm not so much of a greenpeace militant (not at all i would dare to say), but i like to put things straight. Every energy creation process is polluting, that is something that everyone has to aknowledge. Nuclear, oil, coal, windmills, solarpanels... Every single one has big issues regarding to our environment. Don't diminish it, don't ignore it.
GunFuMaster (4 месяца назад)
We wuz kangz building nuclear reactors and shieeet
Derek K (5 месяцев назад)
Wait if all uraniums supossed to be realtivly similar whys saskatchewan uranium so pure? Just newer formerd uranium?
Roy Hemion (5 месяцев назад)
And in other news, trees and grass rally everywhere demanding their own country.
Badum Tsss (5 месяцев назад)
So how did they conclude that this was a natural creation?
George Sosinsky (5 месяцев назад)
Eh ......... I think your stretching a good bit on this one. Not saying it couldn't or wouldn't happen. But honestly I think someone just missed read it a little. And as a human always does it needs to explained and rationalize because it just does. Where did the irradiated water go? Please at least answer that for me. I know you read these. What happened to the radiated water? Will not thumbs up or down until answer/consensus has been obtained.
Terrae (4 месяца назад)
It's a bit hard to answer where exactly it went. Hydrothermal fluids are difficult to track if the don't leave something behind. And maybe that's what happenned with some of the radio-elements contained in the water. It has been deposited somewhere else, at depths we are unable to detect. Also, the process took a very long time, the water was not as irradiated as the one you may find in nuclear reactors. Which means that when it travels a bit, the "pollution" dilute. Even more when it is able to reach the sea.
touristguy87 (5 месяцев назад)
Pretty cool that you hive the forces that created you credit for being better at creating things than you...long before you ever existed, geek
James Simmons (5 месяцев назад)
Are you on drugs or something? Slow it down and stop waving your arms around. Relax. Just speak normally. No need to use an announcer voice and go berserk.
Terrae (4 месяца назад)
\o_/ \_o/ \o/
Troy H (5 месяцев назад)
Nature figured out how to make a self sustaining fusion reactor before we did and we still don't have one so........
Mark bartolabac (5 месяцев назад)
*N A T U R E I S A L W A Y S S M A R T E R T H A N Y O U.*

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