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Sahara dried out slowly, not abruptly: study
Reuters ^ | Thu May 8, 2008 2:10pm EDT | Alister Doyle, Environment Correspondent

Posted on 05/08/2008 2:12:41 PM PDT by suthener

OSLO (Reuters) - The once-green Sahara turned to desert over thousands of years rather than in an abrupt shift as previously believed, according to a study on Thursday that may help understanding of future climate changes.

And there are now signs of a tiny shift back towards greener conditions in parts of the Sahara, apparently because of OSLO (Reuters) - The once-green Sahara turned to desert over thousands of years rather than in an abrupt shift as previously believed, according to a study on Thursday that may help understanding of future climate changes.

And there are now signs of a tiny shift back towards greener conditions in parts of the Sahara, apparently because of global warming, said the lead author of the report about the desert's history published in the journal Science. , said the lead author of the report about the desert's history published in the journal Science.


TOPICS: Culture/Society
KEYWORDS: amazon; catastrophism; climatechange; desertification; global; godsgravesglyphs; refoliation; sahara; sandbox; warming
Do none of these people see the irony of claiming global warming is at fault for a desert turning green that, thouands of years ago, was, well, green? What caused it to become a desert? Could it possibly be that, over time, things change?
1 posted on 05/08/2008 2:12:42 PM PDT by suthener
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To: suthener
Do none of these people see the irony of claiming global warming is at fault for a desert turning green that, thouands of years ago, was, well, green? What caused it to become a desert? Could it possibly be that, over time, things change?

It was all those UFOs of the aliens that helped build the pyramids. The CO2 they spewed was terrible!/SAR. Actually they have known for a long time that Egypt was green and had lots of rain at least 10,000 years ago. The erosion of the sphinx is thought to have been caused by rain, which means they received lots of rain at one time.

2 posted on 05/08/2008 2:21:57 PM PDT by calex59
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To: suthener

I went on a camel trip in southern Algeria back in the 80’s and there were cave drawings there of natives hunting big game, with trees and things like that in the scenes. You could also still find ancient fish hooks in the desert.


3 posted on 05/08/2008 2:44:28 PM PDT by Cementjungle
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To: Cementjungle

Somewhere out there is a ship with the crew still there—bones, chained to their rowing benches. Way out in the desert. Been there a long time.


4 posted on 05/08/2008 2:48:26 PM PDT by RightWhale (It's still unclear what impact global warming will have on vertical wind shear)
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To: Cementjungle; calex59

There is no doubt the Sahara used to be fertile land. I’ve used it as an example of how ridiculous the man-made global warming theory is many times. The climate changes. It always has and always will. It just amazes me that “reporters” can write stories like this and see no conflict in saying that humans are causing change now, but offer a relatively scientific explanation of what caused it 10,000 years ago.


5 posted on 05/08/2008 2:52:15 PM PDT by suthener
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To: suthener
Here's a photo I took of one of the (famous) cave drawings near Djanet, Algeria... smack in the middle of the Sahara:


6 posted on 05/08/2008 3:08:28 PM PDT by Cementjungle
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To: RightWhale

Been reading Clive Cussler?


7 posted on 05/08/2008 3:22:38 PM PDT by TXnMA ("Allah": Satan's current alias...!!)
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To: suthener
It just amazes me that “reporters” can write stories like this and see no conflict in saying that humans are causing change now, but offer a relatively scientific explanation of what caused it 10,000 years ago.

This is Reuters, after all. One must always consider the source.

8 posted on 05/08/2008 3:40:19 PM PDT by Bernard Marx
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To: suthener
And there are now signs of a tiny shift back towards greener conditions
in parts of the Sahara, apparently because of global warming,...


So I guess "global warming" will make the Sahara a wheat-producing
region again, allow the USA to raise year-round crops of grasses
for ethanol (like Brazil), and we won't be bothered by polar bears
in Alaska and Canada anymore.

This works for me!
And the Russians/Siberians that are going to finally get in
some sunbathing days!
9 posted on 05/08/2008 3:49:03 PM PDT by VOA
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To: VOA

BUMP!


10 posted on 05/08/2008 3:54:52 PM PDT by Publius6961 (You're Government, it's not your money, and you never have to show a profit.)
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To: suthener; IrishCatholic; Normandy; Delacon; TenthAmendmentChampion; Horusra; CygnusXI; Fiddlstix; ..
 




Beam me to Planet Gore !

11 posted on 05/08/2008 3:58:54 PM PDT by steelyourfaith
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To: VOA

Sorry, the cold get colder and the hot get hotter. Oh, and women and minorities hardest hit.


12 posted on 05/08/2008 3:59:08 PM PDT by Freedom_Fighter_2001
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To: TXnMA

No, just some guy who has hitchhiked across Africa.


13 posted on 05/08/2008 4:03:24 PM PDT by RightWhale (It's still unclear what impact global warming will have on vertical wind shear)
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To: RightWhale

Bit of a nit, but galley slaves did not exist except from the 16th to 18th centuries.

In ancient times, let’s assume you had 300 free rowers and 100 sailors and marines on board. In a boarding action you had 400 fighters. If your rowers were slaves and the other guy’s were free, your fighters would be outnumbered 4:1, not to mention the obvious danger of your own rowers turning on you.

During the 16th century cannon became the primary weapon system, and the rowers were demoted to mere propulsion. This was when galley slaves came in. If they’re not going to fight anyway, you might as well use your criminals for something useful.


14 posted on 05/08/2008 4:04:35 PM PDT by Sherman Logan (Those who deny freedom to others deserve it not for themselves. - A. Lincoln)
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To: Sherman Logan

This wreck is supposedly way before then, back when the Sahara was navigable.


15 posted on 05/08/2008 4:07:12 PM PDT by RightWhale (It's still unclear what impact global warming will have on vertical wind shear)
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To: suthener

But isn’t this a good thing, the Sahara getting greener? The article has demonstrated one of the benefits of global warming, though that was certainly not their intent (assuming the mechanism is global warming, which I doubt).

But let’s see, when was the Sahara last green? Around the end of the last ice age? So, the Sahara was greener in a cooler world. Hmmm. This impels me to draw the opposite conclusion; the world is now cooling.


16 posted on 05/08/2008 4:16:05 PM PDT by KamperKen
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To: suthener
They don't even see the irony of making that prediction, just 2 years after making the opposite prediction. This is what was predicted in May, 2006:

“Expanding deserts

The new results suggest that the tropics have expanded by 2 degrees latitude, or 140 miles, over the past 26 years.

“It's a big deal,” said study team member Thomas Reichler, a meteorologist at the University of Utah. “If this is true, it also would mean that subtropical deserts are expanding into heavily populated mid-latitude regions.” “

More here: http://www.livescience.com/environment/060525_tropics_expansion.html

Global warming isn't science, because it cannot be falsified.

17 posted on 05/08/2008 4:19:37 PM PDT by USFRIENDINVICTORIA
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To: suthener

I thought that it snowed in Baghdad for the first time in a hundred years, this year. That doesn’t sound like global warming to me.


18 posted on 05/08/2008 4:21:08 PM PDT by Eva (CHANGE- new euphemism for Marxist revolution.)
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To: RightWhale

Understood. My point was that there were no galley slaves in the ancient world, regardless of what Charlton Heston thought.


19 posted on 05/08/2008 4:21:53 PM PDT by Sherman Logan (Those who deny freedom to others deserve it not for themselves. - A. Lincoln)
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To: Cementjungle
Cool!

Thanks for sharing.

20 posted on 05/08/2008 4:24:28 PM PDT by MrsEmmaPeel
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21 posted on 09/15/2008 9:42:06 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile hasn't been updated since Friday, May 30, 2008)
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22 posted on 09/21/2012 5:02:36 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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Evolution in Your Face
by Patrick Huyghe
Omni
Lake Victoria, Africa's largest lake, is home to more than 300 species of cichlids. These fish, which are popular in aquariums, are deep-bodied and have one nostril, rather than the usual two, on each side of the head. Seismic profiles and cores of the lake taken by a team headed by Thomas C. Johnson of the University of Minnesota, reveal that the lake dried up completely about 12,400 years ago. This means that the rate of speciation of cichlid fishes has been extremely rapid: something on average of one new species every 40 years!
12,400 years ago? Hydrologic cycle came to a screeching whoa for some reason, hmm, what could it have been?

To all -- please ping me to other topics which are appropriate for the GGG list.


23 posted on 09/21/2012 5:04:40 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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