When the Sahara Was Green
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- เผยแพร่เมื่อ 9 มี.ค. 2020
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The climate of the Sahara was completely different thousands of years ago. And we’re not talking about just a few years of extra rain. We’re talking about a climate that was so wet for so long that animals and humans alike made themselves at home in the middle of the Sahara.
Big thanks to Fabrizio De Rossi for the reconstructions of the Sahara past and present. Check out more of Fabrizio's work at / artoffabricious
Produced in collaboration with PBS Digital Studios: / pbsdigitalstudios
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References: docs.google.com/document/d/1x... - วิทยาศาสตร์และเทคโนโลยี
Anyone else getting weirdly emotional about the people living in the Green Sahara and how the world they knew is just gone now? Imagine taking a person from there and showing them their home 5,500 years later. The grass, the animals, the beautiful lakes, the villages they grew up in, all gone, replaced by sand and rocks.
To bad ancient man didn't do anything to stop global warming
@@davidritz94 And neither can modern man. Wake up, he just told what happened.
@@chriszelez7970 you think i was serious? Hello, smell a little sarcasm, or do I need to spell it out? Come on
@@davidritz94 paleolithic man should have stopped driving gas guzzling SUV's lol! Too bad the didn't have paleo AOC, she would have saved them!
@@chriszelez7970 Yes we can. The reason the Sahara warmed up and cooled down is because of Milanovich cycles which cause glacial periods and warm periods. Problem is, today we are suppose to be cooling off, not warming up. By now we should be headed back into a glacial period but we are not. That is due to man made CO2 based global warming.
I am from the Algerian desert, it's a wonderful place and we have huge amount of underground water, it's so quite and pure that you feel so relax the time slow down and your soul calm down
Ahla!
@@nziom Alhan*
California will be like this desert soon.
The earth is changing again.
Beautiful
@@Templar07 Algerians tunisias morrccons say ahla not ahlan
I worked in the Libyan desert in 1980. There, about 280km south of the gulf of Sirte near Zilah we saw a larger area of hundreds of petrified trees. Many sections were a few feet in diameter and several feet long and tree rings were perfectly preserved. The petrified wood was a shiny black rock, very heavy.
Did you by any chance bring some back with you? It would certainly have been beautiful and held the incredibly ancient rings if polished.
@bina nocht no they cant
That's a baobab tree for sure...
My sister, husband and two kids moved to Sirte, Libya, in 1986. They were teachers and moved from Mogadishu, Somalia. She had two daughters born in Sirte.
She now lives in Europe.
@@waryaawariiri1812- and...?
My favorite part of all this is that so much of the evidence came from the work of ancient artists. Pretty beautiful to know that humans have always been making art :')
Legend has it that Sahara area was indeed green but got destroyed during the Atlantis destruction.
Can't wait "When the Amazon Was Green" vid.
But was it ever a desert?
It will be soon...
If the Sahara became green again the Amazon would turn into a desert and vice versa
@@GoldenBoyDims Are you sure about that?
DimsThe Immortal According to what source?
Many years later: When the Sahara was a desert.
Also many years later: When the Amazon was green
Or ”When the Sahara, and Amazon weren't nuclear wastelands.
Or before the Amazon was deforested.
Or before the Sahara was deforested
When the Sahara Jungle was a barren wasteland
It should be noted that at about that time, the Gobi Desert is said to have been forested. Also, the desert areas of northern Mexico were greener as well.
Butterfly effect , one dies they all die , it’s a eco system
Are those desert areas along the same longitudinal line?
@@moreofjosem5363 Northern Mexico is, the Gobi desert has a higher latitude
The rock artist were really artists. The detail and dedication it took to carve those drawings into solid rock is astounding and awe-inspiring. One question though; one picture is of a human and a giraffe but it looks as though the giraffe is eating from the human's hand. Would it be possible to train a giraffe to do that? I mean not in a zoo or place where the giraffe had access to its normal diet and didn't need to depend on humans for food. In any case the scene is so peaceful and gentle it almost makes tears.
The moment was probably so astounding that it had to be recorded
What if humans were actually a lot taller than we are now. But back then it was normal, so they didn't make a big deal about it and feeding a giraffe out of our hands meant we didn't have to reach very high, and the giraffe didn't have to bow very low. Imagine!
I wouldn't be surprised if some communities domesticated giraffes
@@SuedeBoy69 Humans were shorter than we are now.
We sre trending higher heights now.
Humans can tame any animal the question isn't IF we can do it but WHY would we do it? However as many cultures have tame elephants for heavy lifting I could see giraffes being used as scout animals with a harness on it's back allowing someone to climb up and see clearly across long distances. Or simply as a meat animal, that long neck is all muscle, the rest of it is just a bigger version of horsemeat and because it grazes on trees it won't compete for the lower grasses that goats and oxen would eat.
Mega-Lake Chad: The mega-chad lake.
Virgin Great Lakes vs Mega Lake Chad
Lake Thad
@@gonaldocr24 the Thad Ocean
Virgin Atlantic Ocean
This is triggering to the incel lakes.
Brb doodling very detailed bigfoot illustrations in local caves in hopes of confusing future archeologists
🤦♂️
Put some fatheads vinyls on the walls like batman and bugs bunny. So detailed they MUST HAVE LIVED IN THE CAVE
@Librarian-at-Large
Yep, that's the basis of a theory that myths about sasquatch come from deeply rooted memories from our ancestors of our homo sapian cousins.
@Hoàng Nguyên That is a rhinoceros with a plant in the background. Notice theres no thagomizer or spiky tail, which is the reason why stegosaurus was famous, Along with their plates
"This is what we call a "troll" painting."
This is the most humbling channel out there. Every time I watch one of your videos I'm reminded of how my lifetime is but a mere blip in my time.
TENERE , TENAREWEEN in plural, means desert in tamazight (berber) language.
Thanks,
Greetings from Morocco 🇲🇦 🌹🌹🌹
'Sahara' means 'desert' in Arabic, so "sahara desert" means "desert desert"
So it should correctly be called either the African Sahara or the African desert?
I believe many deserts are just called desert in the local language. I think its the same with the Gobi and the Teklamakan deserts?
@@joannaedssay5988 yep the desert is the Sahara
Yea but most people call it “ The Sahara “ which is still kinda funny because we refer to it as the desert
@@tedmed225 how did they come up with the lake district
A video idea: The evolution of grass, it's crazy how recent it is in comparison to a lot of things with how much of the planet it and related plants cover now.
The evolution of grass also had a huge impact on the evolution of mammals. That's why almost all large land animal are grass eating mammals.
Its always"disappointing" when documentaries about early dinosaurs show grasslands. It must've been pretty interesting and different with ferns everywhere
Grasses are not recent. There's evidence to show that grasses were around up to 100 million years ago.
This article is from 2005.
www.newscientist.com/article/dn8336-fossil-dung-reveals-dinosaurs-did-graze-grass/
Enigmatic Destroyer comparatively, 100m years is pretty recent
gnargoyl “recent” if we are talking about rocks. In terms of animal evolution it’s a lot. Most of the dinosaurs we know and love are included in that timeframe.
We should be forever grateful to those unknown ancient rock painters for giving us moderns the closest thing that humans have to a time machine. So far.
In a sense this kind of redefines what should be considered a "recorded history", which traditionally starts with the earliest writing systems around 5-6 thousand years ago. The earliest cave art comes from cca 45 thousand years ago, and there are some claims about non-figurative cave art as far back as 64 thousand years ago.
As an African and a big fan of Geology, palaeontology and archaeology, this video has encouraged me to subscribe
Actually its getting even drier! I live on the coast of northafrica it's quite rainy in the winter, but my grandmother told me it used to be alot more rainier and they used to dig only a meter in the ground to find fresh water, now you need to dig atleast 10 meters to find it
in mycountry itsreverse now we gettingflood more often
@@Findyification share some of your rain with us guys 😁
In Saudi Arabia it started getting greener than before but still rains are less than 7 days a year
We should "teraform"...deserts of globe...no real nead to teraform/make green/ the Mars.
Sure..even Mars if possible....but Sahara ..first👍🌞⛱🎉🍀🙌
Climate is always changing all the time, both short term (seasons) and long term. Life has proven to be a master of adaptation though so life will go on. Just keep adapting. :)
I’m from mauritania and gonna tell u the sahara is growing and expanding most part of my country used to be green only the north side was part of the desert but it keeps coming down
Same here in mali I used to live in the desert area of mali in a small town
Take it back guys! You can do it, grazing is the key
I thought the green wall initiative was working 😕
Desertification is illegal and deserters will be killed on sight
Can u pls tell sahara to go back to the north side again? Thanks 👍
Even the Sphinx has clear water erosion all around it, which indicates there was a lot more precipitation back when it was built. This is one of the reasons why some people think the Sphinx is older than originally thought.
Facts. Different groups of people lived there when it was a lush green land.
@@CRange-bh3tb now you realise there was no "sub saharan africa"
@@kalestanforde what? There is. It’s the parts below the sahara
The Sphinx is built near the Nile River which floods regularly. So the Sphinx doesn't need to be considered older than it's current estimate (4500 years old at 2500 BC) to have water erosion marks. And even 4500 years ago means it could have lingering elements of the African green period where there was more rain and more waters in the rivers (eg. More floods).
@@Intranetusa the sphinx at least 12000 to 24000 or even 36000 years old
Summary of what I've learned -
The best rock artists lived in Sahara 5000 years ago.
Unfortunately, their music did not survive, but the album covers are lit af.
Fascinating how we are only here for a very short time, but can still know what the world looked like long ago. To me it's reassuring that these cycles exist
To me it's unnerving that these cycles exist. If the climate can change so much just from volcanoes, plants, or slight changes in sunlight, imagine what we can do.
@@kgallchobhair We aren't even remotely as powerful as the things you listed.
This current "cycle" you think of it as, isn't a cycle at all. It's a man-made global catastrophe. The only way possible the word "cycle" could apply is if it means the end of mankind.
@@atlantic_love The warming we're experiencing is a natural phenomenon, not human-made specifically. The glaciers at the north and south poles expand and retreat every few hundred thousand years. Human activity has sped things up, but the planet will start to cool again eventually as its orbit changes. That's the cycle they're talking about, and it's not something we can alter.
@@russellbrown6888 We won't be around to see them cool. So all we can do is try and fix the things that we have done and are doing that are HEAVILY CONTRIBUTING to global warming. No need to try and deflect or play spin doctor or fight over words.
5,500 years ago,. So 3,500BC? The earliest Egyptians may have seen it.
It may have affect them hard, I guess fast desertification should have caused a mass migration in the region.
yes they did !
It is speculated that the humans who would go on to become the Egyptian people were essentially refugees from the Sahara who made their new homes around the still green Nile Valley.
of course they did, some of the rock art and even figurines of elephants came from them!
The earliest Egyptians and Sumerians were no-doubt climate refugees to the quick drying of the Sahara, and this concentration of people around great rivers is possibly what led to our idea of civilization to begin with.
"The world around us is always changing".
Living in North Africa is truly living in a post-apocalyptic world
?
Not really lmao
How do you figure? Most people of North Africa live near the Mediterranean where there is ample water and arable land, and much of it is thriving and hospitable with growing economies built on service, tourism, and mineral export. Honestly, only Libya has serious issues, and those issues all come from western imperialists in Europe and the US overthrowing their government to steal their resources. Prior to 2014, Libya was one of the most stable and thriving countries in Africa.
@Hammam Hraisha I’m sorry man, south European coastline is waaaaay better
@Hammam Hraisha I’m not talking about the government, I’m talking about the pure beauty, there’s no such islands like in Greece and turkey and no such beaches like in Italy and south France, North Africa is beautiful but not as beautiful as southern europe
@Hammam Hraisha check online “les calanques de cassis” and tell me if you can find beaches like that in Libya
Sometimes wish I had a time machine to see all this kind of stuff first hand 😩
I’d go back in time and put modern day items in places archaeologists will find them just for the lolz
@J. Z. I'm glad I'm not the only one with that wish.
I'm coming with! Let me grab some batteries to record everything.
@@mccari09 same
Just wait until we get in heaven 😊
"imagine the Sahara Desert"
My brain: *Gobi's Desert theme from Banjo Kazooie*
SBBwasaight Vuong damn this takes me wayyyyy back
You had to say it; now I hear it, too.
Now I wanna play Banjo-Kazooie again...
I think of Lawrence of Arabia's theme.
Huh? All i could think of was frank Herbert's dune and the prophecy theme.
Mine would, but I read Banjo Kazooie and got Mumbo's Mountain stuck in my head unstead.:P
thats so cool. imagine them rock artist just drawing for fun. 12,000 years later the drawings still there for us to study. that is absolutely amazing. they did a basic daily thing. like ahhh im bored gonna draw a giraffe.
and they have an impact reaching that far in the future lol so cool.
Nice, clean, clear presentstion. Thanks!
The ironic side is that most of the most inhospitable desert regions of the world; even arabia; were literal paradise regions
At different times.
Then religion moved in.....
@@darkbozo11 are you stupid
Were also under the sea.
@@darkbozo11 Communism in the Arabian Union.
0:35 Look at that grasp of human anatomy, musculature, and perspective! Ancient artist, I'm in awe :)
Host himself is an artwork too
@@samarkand1585 He looks a bit like a young Rutger Hauer
Julie Zeitoun HES A BETTER HUMAN ARTIST THAN ME
Alright that’s it
I’m not drawing humans anymore
Julie Zeitoun at 0:33 there are elephants ;) you men 0:35 I guess.
But the same is true for ancient cave paintings in Europe (Lascaux etc) ancient artists had a VERY good understanding of anatomy, proportions etc. And that’s no wonder since they observed these animals closely every day. Or maybe only the most talented were allowed to paint ;)
Im currently on Google Earth and you can see where these lakes used to be! Love it...I believe The persian Gulf used to extend all the way down into Iraq and Baghdad was once under water
Herodotus was a writer in ancient Greece who traveled in North Africa as far as Libya. He wrote that it was all grasslands.
I strongly believe what made Egypt so prosperous wasn't the thin green line on Nile we see today. And on the other hand what stopped northern europe's people to prosper was the cold.
@@perseusarkouda did you know there are whale bones far inland in Egypt?
@Antoine Shelby I don't think he said there was no desert. I believe he says there was a lot more green that what is today on these countries.
@Antoine Shelby I don't disagree. In my first post I was saying for these countries to be so advanced back in ancient times, must have been a reason. For example the Romans considered North Africa very precious for it's ability to provide the empire with grain.
@Antoine Shelby not what he wrote
Eons: "Just pause for a moment."
Me: *puts the video on pause
*waits for video to tell to resume
are you still on pause?
I continued the video again because PBS Eons already told us to unpause.
Cute
Seraph aspie?
It's crazy to think about how The Old Kingdom of Ancient Egypt began only a few hundred years after the end of the African humid period. The area around the Nile probably was still a lot more green. I'd love to see what it looked like.
Also, it was because of this that there were still lions in North Africa for the Romans to capture during their time.
Small groups of the North African lion(s) survived into the early 1960s (they're called "Barbary Lions") I believe, so people alive in North Africa today have seen/witnessed lions in their lifetime(s).
Since I'm not the only one necroposting on the replies (I'm sorry, it's been 3 years xD), might as well add
The Hejaz and Yemen in the Arabian peninsula today are the epitome of arid desert life, but during the Roman times, it was so green it was referred to by the name "Arabia Felix"
Dang. I didn't realize how much had changed _this recently_
Nicely explained the past tensions of the region.
Fantastic !!
Great presentation. Wow, 230 time green in past 8 million years.
🌳🌵🌿🌱 🌍🌧
Interesting video to say the least. I am west african and in our ancient lores many ethnic groups in this region always seem to point to their origins being further north on the continent, I guess it would make sense that populations would remain on the northern coast or drift further south along with the rains.
This further goes to show the significance of climate change on human history; A Sahara that stayed green would have meant stronger links for trade, dissemination of ideas and civilization building. The Sahara is also half a continent of land not arable and going to waste, imagine the scale of arable land available in a green Sahara with large lakes!
At the current level of global warming another green Sahara might be in the works
Fresh water, meaning another giant branch of the Nile river.
In deserted areas in Algeria we have found different types of shells as well.
Another fascinating video in this fantastic series.
In some places in North Africa, there are objects on the ground like necklaces, some pieces of which are ostrich egg shells which are engraved. There are also triangles, arrows, large stones for polishing. It's like it's been people been there lately
Thanks to the collaboration between ancient rock artists and modern scientists. How else could we have gotten this information.
Not really a "collaboration", but if you must.
"picture the sahara desert... you probably imagined a DESERT, didn't you? LOL"
picture the (Desert) desert...
sahara means desert in arabic too lmao
You're all idiots picturing the Sahara Desert as a Desert. I imagined it as a Tiramisu which is Dessert.
Well, Sahara does mean desert, so ... yeah.
Well, there are deserts that don't look that sandy.
This was facinating, the second of the green Sahara videos I've watched. I can only hope that our beautiful Earth is still here, still sustaining life in one thousand years.
Beautiful video, thank you
I hope teachers show these videos in class nowadays. These are gold
No, they only say humans create global warming..but once your climate tax is implimented ..it will somehow lessen...
@@cyborgar15 Correct. The sun, that glorious orb that rules the day is the cause of all of the warming. Fools every where, to think this warming is due to man.
So how’s the forestation plans for Africa’s deserts going? I heard they were planting trees out there.
Senegal, Burkina Faso and Ethiopia have done so. Don't expect the other nations to do so for a long time. Corruption and wars are rampant in many nations in the area
they're less going far out in to the desert and more are working to reclaim areas that have been lost to desertification
@@wrenlewis7659 yeah, it's more about stopping the current desertification of new areas
They're currently working on blessing the rains down there, so we'll see how that works out.
@@FlintSparkedStudios - Since the 80's or so. Glad that's still going on.
This is fascinating and deserves much more than a rushed 10-minute piece. Is there a full documentary on the subject?
This sort of data tells me that a narrative like Noah's flood or a Hebrew exodus simply are not historical.
Excellent content, PBS! Well done!
It's interesting to note that on the 'later cave art', just as the climate changed, the camel had already been domesticated, as the picture shows a rider on it's back, with a harness!
0:20 These drawings date back thousands of years, located in the Tassili region of the Algerian desert الجزائر
Yes, in the state of Tamanrasette, the 1st Nation at the world, this is the real story hidden and forbidden 🐫🌴🌞☝️🌙
@@tedmed225 what's hidden?
Tassili nadjer
@@user-vu2yb1gy4l the city of sefar is an ancient natural (or maybe not) open rock city classified as the largest opened museum in the world,,,it is a sort of a mystery,, anyone who tries to get deeper into it,,,never comes back,,,the government always warns people to not go a lot inside ,,,local legends tell that it is inhabited by djinn (invisible creatures)
@@donyamalak cuz its rich with gold and uranium that's all .
Story of Djinn is for chkopistanies 🤣 to not level up and stay cubic creatures 😂 kdbo bchwya chkopistan
Great view💚 Thanks lots for your beautiful sharing! Wishe you much success!🌹
Imagine the civilizations hidden beneath those sands
0:19 when ancient artists can paint better than you
LOL...You can't do it on a paper, wonder how ease it is on rock!!! True talent!
These are not paintings . these are engravings even difficult than paintings
They were the real great masters, even Picasso admitted
@@sebo641 Thank you for reminding me what Picasso said when he visited Altamira:
*_“we have invented nothing, none of us can paint like this."_*
They had plenty of time on their hands and were true specialists, don't compare yourself to them. But whenever I meet those ancient anonymous paintings, engravings or statues, I'm always delighted by their avant-guarde streak.
Could you do a video on when australia central deserts where an inland ocean with their very own crocodile species the Baru 🐊 🌊
Ahh yes, the Eromanga Sea (actual name).
@@parmaxolotl sounds like hentai shop or web site (im very sorry)
@@olgapopova5768 It ummm... it rather do, though.
@@olgapopova5768 Absolutely, Eromanga 😂
that is really counterintuitive that MORE warmth would would make an area LESS like a desert
It depends on the relative climate of the time.
This was really good, thank you :)
If the Saraha dried up around 5000 years ago would that mean that it could have indirectly lead to the evolution of ancient civilizations such as the Sumarians and the Egyptians? The idea of the Saraha being green is a tantalizing one and the thought of how much viable land there would have been suggests that people may have spread out a lot in those times. Losing all of that and huddling around water sources like a fire in the night may have been what sparked civilization on a large scale. Thanks for the great video, so much fun food for thought.
It is not only a thought. You can find bones in the desert of hippos and especially fish which you can dated with carbon-14 dating method quite acuratly. If you might noticed I am no english-native. My german prof. in university in berlin worked on that field in Libya and Egypt. His life-work is in a book which is only available in german, sadly: Pachur (2006) Die Ostsahara im Spätquartär (Springer-Press).
Human society as we know it today (with people living in cities and agricultural technology and domesticating animals and the use of science and technology) would perhaps not even exist without this climatic change. Sp maybe the current climate change can be a driving force for new innovations and technology to deal with a more rapid change in climate, like finding ways to produce food with less water, regreen deserts, and to change from fossile fuels to renewables and nuclear.
I think your right lol. The Sahara desert formed in approximately 300 years, a time span equivalent to the duration between the present day and the signing of the Declaration of Independence. I assume that people likely flocked in areas abundant with resources and engaged in rapid trade. This likely also triggered the agricultural revolution, as the scarcity of fresh fruits and vegetables in the desert would have made them increasingly difficult to get. This may have also provoked the beginning of conflicts among mankind to assert dominance over land.
Totally agree. It makes so much sense. Although to be clear at that time agriculture had been practiced for ~5000 years already in the levant
This is my favorite Channel on TH-cam. Even in recent years humans saw a planet that would be unrecognizable to us today. The history of our world is so long and diverse the more I learn about it the more alien this world feels.
I love it.
I am a geologist and I worked for 1 year in the middle of Sahara desert on the Mauritania-Mali border. In many places, small, lime remnants of paleo lakes are visible. Ostrich eggs (semi-fossilized), grinding stones, obsidian axe, and arrowheads are easily found around these paleolakes. Sahara was green for sure not long time ago..
Thank you very much. There is a perpetual moving of the elements, indeed.
Praise Prophet Muhammad who said the sahara was green he said ,The desert was rainy and gardens in the past and it will return gardens and rainy as a sign of the day of judgement .
0:29 I saw that exact photo when I was in Tassili N'Ajjer National Park, Algeria
Damn do I love coming home from school and seeing PBS Eons uploaded.
Lmao it's 23.27pm 😂😭
It’s 11:27 for you, 5:30 for me
@@Honne1064 you realize there are people that live in different time zones than you, right?
Wow it's nice seeing another youngster watch these videos, usually it's viewed by an older demographic.
Same, but right now I’m off of school for 2 weeks
I miss these old days...😪
That was a great breakdown...thanks!!!
I dreamed about sahara but the surrounding is all green..and has ocean..everytime i read a word sahara dessert giving me goosebumps..
Interesting thought: imagine an Africa that still had such vast land & resources to explore. An ancient power equal or greater than Egypt’s might have formed.
I wonder, if maybe it did? Egypt was already doing pretty good 5000 years ago, so why not a civilization west of it, maybe close to the ancient lake?
KRS: Imagine.
Me: Atlantis?
A green Sahara would change the entire history of the Mediterranean.
It’s hard to say whether a great land power would form in the hospitable land, or if it would’ve turned into a open plain for nomadic peoples like the Eurasian steppe.
It’s also hard to say how impactful Egypt and Mesopotamia would’ve been with large plains to settle instead of being constricted to river valleys/flood plains.
They are the Ancient Egyptians they just went to Nile. If it were still green today, cultures would just spring up on the Southern Mediterranean first as opposed to the north eastern shores. I don't think it would change, Rome like place would start in Egypt as opposed to Italy first.
I'm sure its possible given enough time and luck, but generally speaking Olmecs and Aztecs aside, civalisations appear to be more probable when groups of people are exposed to harsher conditions, for example the event that gave rise to Egypt itself was a great drought that the first known pharaoh conquered with canals off the Nile, single handedly unifying upper and lower egypt and becoming the first pharaoh of greater egypt.
The tons of water, fruit and prey that forrests offer just don't seem to drive innovation as much or in the same way that harsher environments do.
It's a nice thing that we humans have tendancies to paint and record our surroundings. We may not always do the best things to our fellow animals and plants but our desires to record things with painting and literature help paint a picture of the past.
Sahara desert was a result of an asteroid impact somewhere around 12,000 BC. Before then Atlantis was around that area. Which is where remainder of those people ended up...Babylon, Egypt etc.
Rubbish. Cattle caused the sahara. Extreme overgrazing of cattle.
Dang, I wish I could draw giraffes and elephants that good. :/
@@m.dewylde5287 not everyone can speak english fluently
I can draw water.
Those giraffes and elephants could be a little naughty at times.
@@alliuumduo Name two.
Artist must have left a trail of art work. Most of it lost forever
My brain: wanna know if the Sahara was always a desert
Me:why though?
My brain: you just gotta
I'm very glad you exist.
WORLD SHIFT. ABOUT TO HAPPEN AGAIN. LOOK AT THE PAST ...LEARN SOMTHIN
Because the balance in our planet is awesome.
Actually your brain is talking to itself , you are your brain
It will be green again at some point
Fascinating!
Fascinating
I have a lovely fossilised log from desert in Sudan and it has all the features of a fallen tree with knot holes and bark. It proves that the Sahara had trees of a decent size
I have a bunch of lovely coconuts.
There they are, all standing in a row. It proves there were...
big ones, small ones, some as big as your head.
@@iloveamerica1966 bored?
@@peetsnort a bit.
@Robert Williamson I think the continent plate drifting has more to do with crocs and turtles being there.
The whole of Australia is moving slowly for example.
The surface of the earth is like plastic over hundreds of millions of years. Slowly moving
Love these videos, I'm going to school to become a paleontologist and these videos remind me every day why I want to be one
Keep going! I believe in you!
When I die imma bury a nokia in the Antarctic to screw with ppl like you 😂
Then please never give up on your dream, kiddo !
I gave up ; ill-adviced by those i trusted the most and spent more than a decade, to this day, regretting it...
Don't end up like me : fight for your dream, you'll pull through
@@Iucebowel good luck with that
@VobisPacem imagine finding an egyptian symbol in the middle of France right below the eiffel tower and trying to explain that to the public
This is really dope to think about. A green Sahara once more.
Fascinating stuff. I did know that the Sahara was once very green and that it was once a flourishing region that was home to many different animal species. I just didn't know how it came to be a desert. Nice to know it is just one of the Earth's cycles and will eventually become green again.
That was incredible, I love this stuff thank you.
yeah i worked in the Algeria Desert and it's beautiful,tho it's dry but groundwater is everywhere ,just dig anywhere and there is water.
Guy: There are cave drawings that show giraffes and other animals found in Central and Southern Africa in the Sahara
Me: Ummmm so you're just going to ignore the fact that that guy is half as tall as the giraffe???
Fun fact, South America once had much more plains and much less forest, but these dust movements off the Sahara supply SA with heavy amounts of phosphorus, inducing the rainforest growth
Meanwhile in 7520: "When europe and north america were green"
Meanwhile in the year 3020: “When there were polar icecaps”
@@mintchip5763 recomendation tab on 3020: when the sea level wasn't soo high
Like humans'l be alive even by 3000
trending tab in 10940 A.D: "when humans resided on a small, (previously) blue planet called "earth""
RescueRex70 by 2100
Thanks for the good job you have done. Amazing what you can learn from history.
Ethiopia has reversed desertification and Allen Savoy has explained a practical solution.
he can save the World …. XR rebellion hate him
I love PBS!! For my final essay in English I wrote my essay on why we need to keep funding PBS.I grew up poor and the only tv we had was by antenna. PBS inspired me and grew my curiosity. It allowed me to grow into the person I am today. Thank you PBS!!
I have heard that Saharan dust is an important factor in fertilizing the Amazonas Raindforest. Has there been any research into how the Green Sahara impacted (if at all) Amazonas?
Also, if the Northern hemisphere got warmer, did the southern hemisphere cool at the same time, or was this an overall increase in solar radiation, and what impact did that have on a global scale?
I was just gonna ask that
My guess is that earth's tilt would make the southern hemisphere a bit cooler, however, since it doesn't have much landmass in it, it would've cooled down just a little. You should also take into account the global temperatures at that time
I believe at that time the Amazon didn't exist as it does today. There wasn't a single, gigantic rainforest. What there was, was a collection of small patches of jungle separated by vast expanses of savannah, a landscape similar to today's Cerrado in Brazil.
I'm just curious if we were to artificially green the Sahara could we mitigate the loss of the dust? Therefore getting the best of both worlds and trapping massive amounts of carbon and creating a massive new bread basket at the same time?
@@jacobkobald1753 geoengineering at it's finest
Yes. I believe the Sahara desert use to have water over its land and I could believe how it took awhile to stay green before it became sand more over.
Seeing the greener kind does look more pleasant.
Thanks for taking us back in time again better than what I found before you.🧡
Amazing 👏 job
Thanks
I liked your information
I would listen to this if it were a podcast - the narration is excellent.
Awesome video, as always! Damn I forgot how much I love this channel. And Steve.
Our planet will keep on changing regardless of what humans do
You guys should do a video on how Africa is splitting in two.
This reminded me of the Sphinx water erosion hypothesis
absolutely, this is the most important comment here ^^^
The best explanation out there i think is that the sphinx was carved from a preexisting natural rock formation, so the weathering would have been there already
@@matthewcreaks2147 If it was carved out of weathered rock, the old weathered surface would have to be carved away, revealing the new rock underneath. But how come this new, freshly carved rock shows signs of water erosion?
@@one2threeee well from what i see, the carved sphinx itself isnt actually eroded, its the rocks underneath and around it
also yeah, accodding to the known age of sphinx its around 4.5k years old, so that matches perfectly being about 500 years after the dying of sahara
I was just watching the Robert Schoch interview on Joe Rogan's podcast last night talking about this.
I never realised stone art painting could be used this way. Very observant.
fascinating .
Thank you
I recommend PBS's Secrets of the Dead, "Egypt's Darkest Hour" which shows the collapse of the empire’s Old Kingdom and presents evidence of a change in the environment from savanna grasslands to desert.
The drying of the Sahara caused a migration to the Nile, Then probably fighting resulted, things settled down, a hierarchy developed, Egypt began. I really don’t know
If only they had stopped eating meat, stopped driving cars, ended all fossil fuels...
I wonder too, if the Green Sahara was so fertile and lush that people didn't need agriculture. When the normal foods of homo sapiens became scarce, they grew to depend on crops from the flooding Nile Valley. (Also needing food supplies to supply an army, and specialized farmers and peasants to grow and cultivate these crops.) Basically, I think what Eddie brevet said could be expanded and explored a lot further.
@@squirlmy Agriculture is necessary to make a civilization like that. Without agriculture (and animal husbandry) civilizations cannot become very advanced, because they are all required to "hunt and gather" --almost every person is involved in food acquisition.
You have to have food stores (storage of food, production of food greater than the people producing the foods can eat) to free people up to devote time to other tech, like architecture and art and music and everything else people do that does not directly feed themselves.
TH-cam getting too comfortable with these 2 ads 😩
Josh
Then don't use the platform.
install Ad block, u will never see them again
@@tayebbentria is there an ad block for the youtube app or only the browser?
@@The6Eternal6Dark6Lord Only the browser
I LOVE LEARNING
Imagine traveling back in time to find the hypothesis is incorrect. Imagine seeing the rock painters and realizing it’s just Grandma’s “photo” album from her trip to the south.