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Humans re-united to fight extinction
AFP via. The Times of India ^ | 25 Apr 2008, 1932 hrs IST | AFP

Posted on 04/25/2008 11:04:35 AM PDT by CarrotAndStick

WASHINGTON: Human beings for 100,000 years lived in tiny, separate groups, facing harsh conditions that brought them to the brink of extinction, before they reunited and populated the world, genetic researchers in a study said on Thursday.

"Who would have thought that as recently as 70,000 years ago, extremes of climate had reduced our population to such small numbers that we were on the very edge of extinction," said paleontologist Meave Leakey, of Stony Brook University, New York.

The genetic study examined for the first time the evolution of our species from its origins with "mitochondrial Eve," a female hominid who lived some 200,000 years ago, to the point of near extinction 70,000 years ago, when the human population dwindled to as little as 2,000.

After this dismal period, the human race expanded quickly all over the African continent and emigrated beyond its shores until it populated all the corners of the Earth.

The expansion marked the end of the Stone Age in Africa and the beginning of a cultural advancement that has led several archaeologists to consider it the start of modern man, with the advent of language and complex and abstract thought.

The migrations out of Africa are estimated to have begun some 60,000 years ago. But little was known about the human trajectory between Eve and that period.

Published in the American Journal of Human Genetics , the study analyzed the maternally-transmitted mitochondrial DNA of human populations in southern and eastern Africa who appear to have diverged from other groups 90,000 to 150,000 years ago.

The researchers said paleoclimatological data suggests that Eastern Africa went through a severe series of droughts between 135,000 and 90,000 years ago that may have contributed to population splits.

Tiny bands of early humans developed in isolation from each other for as much as half of our entire history as a species, explained the study's chief authors Doron Behar, a genographic associate researcher based at Rambam Medical Center, Haifa, Israel, and Saharon Rosset, of IBM T.J. Watson Research Center, New York and Tel Aviv University.

"It was only around 40,000 years ago that they became part of a single pan-African population, reunited after as much as 100,000 years apart," said Behar.

"This new study ... illustrates the extraordinary power of genetics to reveal insights into some of the key events in our species' history," said Spencer Wells, of the National Geographic Society.

"Tiny bands of early humans, forced apart by harsh environmental conditions, coming back from the brink to reunite and populate the world. Truly an epic drama, written in our DNA," he added.

From a band of about 2,000 individuals, human beings have grown to a current population of about 6.6 billion.


TOPICS: Culture/Society; Extended News; News/Current Events
KEYWORDS: africa; anthropology; dna; evolution; freepun; genetics; godsgravesglyphs; humans; migration
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1 posted on 04/25/2008 11:04:35 AM PDT by CarrotAndStick
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To: CarrotAndStick

I do not think that 70,000 years ago this event is true based on a small region of the world.

Get real, next you will trying to sell me something about Global Warming, oh wait, never mind.


2 posted on 04/25/2008 11:07:26 AM PDT by stockpirate (Be a MAVERICK in the GOP , go against the wishes of our nominee John McCain!)
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To: CarrotAndStick

The BS meter just got pegged on that one. How would small groups of humans living across a large continent find eachother to “re-unite” 70K years ago? Cell phones??


3 posted on 04/25/2008 11:12:56 AM PDT by wendy1946
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To: CarrotAndStick
Humans re-united to fight extinction

Was there any evidence that the populations reunited as opposed to all but the main population dying out, followed by a massive exansion from that remaining center?

4 posted on 04/25/2008 11:15:13 AM PDT by KarlInOhio (Pray for Rattendaemmerung: the final mutually destructive battle between Obama and Hillary in Denver)
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To: wendy1946
Smoke signals!

Seriously, I thought this was a new movement from the headline...

5 posted on 04/25/2008 11:18:25 AM PDT by Smokin' Joe (How often God must weep at humans' folly.)
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To: CarrotAndStick

I think Meave Leakey some brain tissue. If that was the case more and more human remains would have been found before the finding of so many reptilian fossils. Nice try but your 15 minutes are up.


6 posted on 04/25/2008 11:19:00 AM PDT by Wavrnr10
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To: CarrotAndStick
"Tiny bands of early humans, forced apart by harsh environmental conditions, coming back from the brink to reunite and populate the world.

Well, if you define Noah's family as a "tiny band of early humans" and describe The Flood as "harsh environmental conditions" he's got it right.

7 posted on 04/25/2008 11:19:19 AM PDT by TexasNative2000 (Is this tagline governed by McCain-Feingold?)
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To: KarlInOhio

The can trace mitochondrial markers in the DNA. They can see when groups diverged, and they can see when those groups began swapping genes again.


8 posted on 04/25/2008 11:19:28 AM PDT by Soliton (McCain couldn't even win a McCain look-alike contest)
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To: wendy1946
The BS meter just got pegged on that one. How would small groups of humans living across a large continent find eachother to “re-unite” 70K years ago? Cell phones??

Jungle telegraph.

(Ted, is that you?)

9 posted on 04/25/2008 11:19:47 AM PDT by Coyoteman (Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.)
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To: wendy1946

Of course they didn’t have cell phones, they used coconut phones.


10 posted on 04/25/2008 11:22:33 AM PDT by driftdiver
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To: CarrotAndStick

60,000 years ago was the beginning of the last glacial period.

Humans would have been forced together towards the equator to survive.


11 posted on 04/25/2008 11:24:51 AM PDT by <1/1,000,000th%
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To: wendy1946
"The BS meter just got pegged on that one. How would small groups of humans living across a large continent find each other to “reunite” 70K years ago? Cell phones??" Providence?
12 posted on 04/25/2008 11:26:20 AM PDT by atc23
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To: CarrotAndStick
"Who would have thought that as recently as 70,000 years ago, extremes of climate had reduced our population to such small numbers that we were on the very edge of extinction,"

Human beings survive in desert and arctic climates, a temperature range more than 150 degrees Fahrenheit. Any extreme climate change would have wiped out most other creatures that are still here. This is global warming BS.

13 posted on 04/25/2008 11:27:41 AM PDT by LoneRangerMassachusetts
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To: Soliton

“They can see when groups diverged, and they can see when those groups began swapping genes again”

I have a bridge to sell ya if you believe they can do this accurately.


14 posted on 04/25/2008 11:28:16 AM PDT by driftdiver
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To: CarrotAndStick

These groups “re-converged” to fight global warming!


15 posted on 04/25/2008 11:29:42 AM PDT by DesertSapper (God, Family, Country . . . . . . . . . . and dead terrorists!!!)
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To: blam; Coyoteman

Pingski


16 posted on 04/25/2008 11:30:38 AM PDT by ASA Vet (Do we really want Huma answering the White House phone at 3 AM?)
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To: wendy1946
The BS meter just got pegged on that one. How would small groups of humans living across a large continent find eachother to “re-unite” 70K years ago? Cell phones??

Ever hear of cumbayah? Sound carries!

17 posted on 04/25/2008 11:31:01 AM PDT by meandog (Please pray for future President McCain--day minus 272 and counting! Stay home and get Baraked!)
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To: <1/1,000,000th%

“Humans would have been forced together towards the equator to survive.”

Well that narrows it down, NOT. 2,000 spread out around the equator are not going to find each other. Small groups may have survived in this region but its not like Aunt Ugabugga suddenly decided to move back in with her sister 12,000 miles away.


18 posted on 04/25/2008 11:31:46 AM PDT by driftdiver
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To: driftdiver
I have a bridge to sell ya if you believe they can do this accurately,i>

You wouldn't argue if it didn't impact your religious belief

19 posted on 04/25/2008 11:36:48 AM PDT by Soliton (McCain couldn't even win a McCain look-alike contest)
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To: driftdiver

If Mitrocondial Eve is the mother of all these divergent groups might one speculate there was wife swapping to provide the gene swapping?

I guess the guys threw all their clubs in a pile and she went back to the batchelor cave with whichever guy owned the club she picked out.


20 posted on 04/25/2008 11:39:57 AM PDT by wildbill
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To: wendy1946
Shoes.

Then bicycles.

Then drive in movies.

There's a logical progression here if you take a long term look.

21 posted on 04/25/2008 11:49:13 AM PDT by muawiyah
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To: TexasNative2000
In a little bit older version of Ma-Nu and the flood, there are, of course, a number of humans on board the boat, but most of the passengers are simply "sages" or "demigods" of a sort who understand all the arts and skills.

Once Ma-nu and his wife begin making babies, the sages pass along their knowledge then disappear back to Heaven.

So, yes, 7 personages, not all of them human though.

Do you have an "older version" than that?

22 posted on 04/25/2008 11:51:49 AM PDT by muawiyah
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To: wendy1946
The BS meter just got pegged on that one. How would small groups of humans living across a large continent find eachother to “re-unite” 70K years ago? Cell phones??

Perhaps rather than scattered all over, a small group of humans survived in a few -- maybe just one -- protected areas.

23 posted on 04/25/2008 12:11:14 PM PDT by onewhowatches
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To: CarrotAndStick

Oh wait, maybe if we all re-unite today on Global warming we can avoid extinction again.

What a ridiculous subtext.


24 posted on 04/25/2008 12:29:34 PM PDT by lonestar67 (Its time to withdraw from the War on Bush-- your side is hopelessly lost in a quagmire.)
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To: CarrotAndStick

The mega-colossal eruption Mt Toba in Sumatra may have caused climate change about 70,000 years ago. Estimated 2800 cubic km of erupted material could have partially blocked the sun.


25 posted on 04/25/2008 12:50:05 PM PDT by buck jarret
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To: muawiyah
Do you have an "older version" than that?

Sumerian Zi-ud-sura? There are something like 20 flood myths around the world.

26 posted on 04/25/2008 1:08:10 PM PDT by antiRepublicrat
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To: onewhowatches
The basic idea is that a bunch of apes got tired of living in trees and decided to start walking around on the African savannas on two legs and start acting civilized. That is, with 500+ lb predators running around all over the place, with the 500-lb predators making 45 mph on four legs while your best on two is around 15, and the predators can see in the dark and you can't. Oh, yeah, forgot the thing about proto-human infants screaming their heads off periodically like human infants and small children do, to let the predators know where the human groups were.

Neat theory, isn't it?

27 posted on 04/25/2008 1:46:21 PM PDT by wendy1946
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To: wendy1946; tomzz
The basic idea is that a bunch of apes got tired of living in trees and decided to start walking around on the African savannas on two legs and start acting civilized. That is, with 500+ lb predators running around all over the place, with the 500-lb predators making 45 mph on four legs while your best on two is around 15, and the predators can see in the dark and you can't. Oh, yeah, forgot the thing about proto-human infants screaming their heads off periodically like human infants and small children do, to let the predators know where the human groups were.

Neat theory, isn't it?

You must have a better one? Could you share it with us, please?

28 posted on 04/25/2008 1:53:09 PM PDT by Coyoteman (Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.)
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To: ASA Vet
Thanks. Posted here too.

Study Says Near Extinction Threatened People

29 posted on 04/25/2008 1:58:13 PM PDT by blam (Secure the border and enforce the law)
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To: wendy1946
The basic idea is that a bunch of apes got tired of living in trees and decided to start walking around on the African savannas on two legs and start acting civilized. That is, with 500+ lb predators running around all over the place, with the 500-lb predators making 45 mph on four legs while your best on two is around 15, and the predators can see in the dark and you can't. Oh, yeah, forgot the thing about proto-human infants screaming their heads off periodically like human infants and small children do, to let the predators know where the human groups were.

Neat theory, isn't it?

Sounds about right to me. It's amazing what an advantage a little superior brainpower is.

30 posted on 04/25/2008 2:26:58 PM PDT by onewhowatches
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To: wendy1946; CarrotAndStick; Rennes Templar; LexBaird; mikrofon; martin_fierro; lowbridge; ...
The BS meter just got pegged on that one. How would small groups of humans living across a large continent find each other to “re-unite” 70K years ago? Cell phones??

It turns out that this article is not about people uniting in holy matrimony to outbreed the deadly bubonicplanus plagueparenthood. Based strictly on Wendy's comment, the article, which I may or may not have read, may or may not touch on the autoevolution of the telecommunications system, which curiously displayed its own Intelligent Design aspects.

Astonishing, I know. You see, 72,000 years ago, seashells evolved spider-web-like cords to help keep them together in colonies. Then, 70,000 years ago humans discovered that they could be stretched and would carry sound, long before tin cans with string were invented.

Or something like that.

Maybe.

I wasn't there.

Neither were the evolutionists.

/sarcasm.






Pun for All and All for Pun....
Funners & Punners
ping list PING! (see keyword FReePun)
If you want either on or off
this family-safe occasional ping list,
you must be out of your minds....


Let me know of any appropriate candidate threads. I don't ping the list to threads that are sacreligious or tacky or seem likely to become so.
(on or off requests, just FReepmail, enclosing a nominal $217.95 list processing fee).

31 posted on 04/25/2008 5:37:51 PM PDT by The Spirit Of Allegiance (Public Employees: Honor Your Oaths! Defend the Constitution from Enemies--Foreign and Domestic!)
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To: CarrotAndStick; The Spirit Of Allegiance

Didn’t they have caves back then where men lived and mitochondrial trade was first invented just before the revolutionary wheel?


32 posted on 04/25/2008 5:44:17 PM PDT by Radix (Sometimes a post is just a post.)
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To: Radix

The revolutionary wheel was invented sometime after the non-revolving wheel, or “rock” as it was originally called.

Rumor has it that a lightning strike created the Fire-stone Tire and Rubber Corporation and it was at that point that the wheels of commerce began to turn.


33 posted on 04/25/2008 5:52:19 PM PDT by The Spirit Of Allegiance (Public Employees: Honor Your Oaths! Defend the Constitution from Enemies--Foreign and Domestic!)
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To: wendy1946
The BS meter just got pegged on that one. How would small groups of humans living across a large continent find eachother to “re-unite” 70K years ago? Cell phones??

Singles bar.
34 posted on 04/25/2008 5:53:46 PM PDT by Cheburashka (Liberalism: a tale told by an idiot, full of sound and fury, signifying nothing.)
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To: devolve; The Spirit Of Allegiance; Lady Jag; CarrotAndStick; MeekOneGOP
I kindof like Lady Jag's version of this, fits right in here, lol.

Post#584

HISTORY 101

35 posted on 04/25/2008 6:00:56 PM PDT by potlatch
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To: potlatch; Lady Jag
CLASSIC!!!

Conservatives are big-game hunters, rodeo cowboys, lumberjacks, construction workers, firemen, medical doctors, police officers, corporate executives, athletes, Marines, and generally anyone who works productively. Conservatives who own companies hire other conservatives who want to work for a living.

Liberals produce little or nothing. They like to govern the producers and decide what to do with the production. Liberals believe Europeans are more enlightened than Americans. That is why most of the liberals remained in Europe when conservatives were coming to America. They crept in after the Wild West was tamed and created a business of trying to get more for nothing.


36 posted on 04/25/2008 6:14:07 PM PDT by The Spirit Of Allegiance (Public Employees: Honor Your Oaths! Defend the Constitution from Enemies--Foreign and Domestic!)
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To: The Spirit Of Allegiance; devolve

I am very familiar with “Conservatives”. I live in a mid -sized town in south Texas where people are....NORMAL!! LOL


37 posted on 04/25/2008 6:19:35 PM PDT by potlatch
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To: Coyoteman
Wasted your music again huh?


38 posted on 04/25/2008 6:24:51 PM PDT by ASA Vet (Do we really want Huma answering the White House phone at 3 AM?)
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To: CarrotAndStick

No hidden agenda here...nah. None, whatsoever.


39 posted on 04/25/2008 6:30:09 PM PDT by NewLand (Operation Chaos is working!)
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To: The Spirit Of Allegiance
Amen.


40 posted on 04/25/2008 6:37:52 PM PDT by Lady Jag ( I dreamed I surfed all day in my monthly donor wonder bra - https://secure.freerepublic.com/donate)
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To: potlatch

Good post potlatch


41 posted on 04/25/2008 6:52:01 PM PDT by devolve ( -- -The_Project_Islamic_Hope_website_banner no_longer_features_Barack_Hussein_Obama_Junior)
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To: devolve

Don’t know if you recall - I got that in email long ago and did send it to you. Thought it was so funny.


42 posted on 04/25/2008 6:55:42 PM PDT by potlatch
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To: Cheburashka
Singles bar.

MySpace

43 posted on 04/25/2008 7:23:56 PM PDT by Godzilla (How do I set a laser printer to stun?)
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To: DesertSapper; The Spirit Of Allegiance
These groups “re-converged” to fight global warming!

No, to fight Global Cooling. They converged out of the need to huddle together for warmth.

It worked, too. Though many were cold, few were frozen.

44 posted on 04/25/2008 7:38:51 PM PDT by ApplegateRanch (The Great Obamanation of Desolation, attempting to sit in the Oval Office, where he ought not..)
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To: The Spirit Of Allegiance

Oh boy here we go again


45 posted on 04/25/2008 7:42:27 PM PDT by al baby (Hi mom)
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To: al baby

“Let’s get together, smile on your brother”

Right now.

‘60s feelgood song.

70060s B.C. that is.


46 posted on 04/25/2008 7:50:42 PM PDT by The Spirit Of Allegiance (Public Employees: Honor Your Oaths! Defend the Constitution from Enemies--Foreign and Domestic!)
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To: ApplegateRanch

LOL


47 posted on 04/25/2008 7:51:20 PM PDT by The Spirit Of Allegiance (Public Employees: Honor Your Oaths! Defend the Constitution from Enemies--Foreign and Domestic!)
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To: Coyoteman
“re-unite” 70K years

That is fairly close to 2,500 generations. Just how much genetic drift in these small populations would that involve? Would they even recognize each other as 'human'?

Probably not long enough for speciation, maybe; but not something to 'breed' peace & harmony?

48 posted on 04/25/2008 7:57:13 PM PDT by ApplegateRanch (The Great Obamanation of Desolation, attempting to sit in the Oval Office, where he ought not..)
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To: ApplegateRanch
“re-unite” 70K years

That is fairly close to 2,500 generations. Just how much genetic drift in these small populations would that involve? Would they even recognize each other as 'human'?

Probably not long enough for speciation, maybe; but not something to 'breed' peace & harmony?

For true speciation I think you would need both total isolation and extreme selection pressure on the two groups, but I doubt if 70k years would be enough. A lot of the superficial traits certainly would change in that time (stature, skin color, hair form, etc.) if selection pressure was strong enough in particular directions.

Maybe some genetic types could offer an opinion on this question, if there are any still around.

49 posted on 04/25/2008 8:03:34 PM PDT by Coyoteman (Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.)
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To: Coyoteman

Thanks. What I had in mind was along the lines of the ‘shaved monkey’ effect. Fighting rather than interbreeding.


50 posted on 04/25/2008 8:09:21 PM PDT by ApplegateRanch (The Great Obamanation of Desolation, attempting to sit in the Oval Office, where he ought not..)
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