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Science/Tech
See other Science/Tech Articles

Title: DNA Test Indicates Very Green Greenland
Source: AP via Comcast
URL Source: http://www.comcast.net/news/science ... NCE&fn=/2007/07/05/707378.html
Published: Jul 5, 2007
Author: RANDOLPH E. SCHMID
Post Date: 2007-07-05 23:53:05 by farmfriend
Ping List: *Agriculture-Environment*     Subscribe to *Agriculture-Environment*
Keywords: None
Views: 304
Comments: 8

DNA Test Indicates Very Green Greenland

By RANDOLPH E. SCHMID, AP Science Writer

WASHINGTON - Ice-covered Greenland really was green a half-million or so years ago, covered with forests in a climate much like that of Sweden and eastern Canada today.

An international team of researchers recovered ancient DNA from the bottom of an ice core that indicates the presence of pine, yew and alder trees as well as insects.

The researchers, led by Eske Willerslev of the University of Copenhagen, Denmark, say the findings are the first direct proof that there was forest in southern Greenland.

Included were genetic traces of butterflies, moths, flies and beetles, they report in Friday's edition of the journal Science.

The material was recovered from cores drilled through ice 1.2 miles thick at a site called Dye 3 in south central Greenland. Ice cores from another site farther north, 1.8 miles deep, did not yield any DNA.

Greenland was discovered by Vikings sailing from Iceland about 1,000 years ago. While it had an ice cap then, the climate was relatively mild and they were able to establish colonies in coastal areas. Those colonies later vanished as the climate cooled.

But the new research shows it hasn't always been so cold there.

"These findings allow us to make a more accurate environmental reconstruction of the time period from which these samples were taken, and what we've learned is that this part of the world was significantly warmer than most people thought," Martin Sharp, a glaciologist at the University of Alberta, Canada, and a co-author of the paper, said in a statement.

The base of the ice is mixed with mud and it was this mud that Willerslev's team studied.

The DNA, dated to between 450,000 and 800,000 years ago, may be the oldest yet recovered, according to the team. DNA found previously in the Siberian permafrost has been dated to 300,000 to 400,000 years ago.

However, because of uncertainties in interpreting the age estimates, they could not rule out the possibility that the newly found DNA dates to the last interglacial, 130,000 to 116,000 years ago.

The research was funded by the Carlsberg Foundation, National Science Foundation of Denmark, the Wellcome Trust, Natural Environment Research Council, European Union, the Natural Sciences and Engineering Research Council of Canada, McMaster University, the Polar Continental Shelf Project, Max Planck Society and the Swiss National Science Foundation. Subscribe to *Agriculture-Environment*

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#1. To: farmfriend, JCHARRIS, FRANK ZAPPA (#0) (Edited)

The theories of Continental Drift and Plate Tectonics might suggest Greenland was at a more southerly latitude 1 million years ago. Eventually, it will be at the North Pole, then back at the equator on the other side of the Earth, eventually to be subducted and vaporized beneath the Sub-Saharan_East_Indian Plate, along with all [EDIT] the folks in San Francisco. Fisherman's Wharf will be located near present day North Bay with the prime menu item being Whalrus fin soup and Baby Otter Thermador served by 3 billion screaming Chinamen. [Oh wow man...a bad trip!!! Heeeeeeelp!]

Law Enforcement Against Prohibition

IndieTX  posted on  2007-07-06   1:04:27 ET  Reply   Trace   Private Reply  


#2. To: farmfriend (#0)

Basic References:

Lawrence Solomon's "The Deniers" (a series of articles on the view of scientists who have been labelled "Global Warming Deniers"):

Other References:


Government Warning: The Attorney General has determined that Federal Regulation may be hazardous to your health

sourcery  posted on  2007-07-07   17:56:38 ET  Reply   Trace   Private Reply  


#3. To: IndieTX (#1)

In geologic time where plate tectonics and continental drift occur, 1 million years is hardly any time at all. Greenland was at essentially the same lattitude back then.


Government Warning: The Attorney General has determined that Federal Regulation may be hazardous to your health

sourcery  posted on  2007-07-07   17:59:27 ET  Reply   Trace   Private Reply  


#4. To: sourcery (#2)

Don't forget, scientists who push anthropogenic global warming are funded by foundations that are back doors for the oil companies. Who stands to gain from regulation created shortages?


farmfriend  posted on  2007-07-07   17:59:41 ET  Reply   Trace   Private Reply  


#5. To: sourcery (#3)

I'm very much aware of that. I left off the martini gif. ;-)

Law Enforcement Against Prohibition

IndieTX  posted on  2007-07-09   0:50:22 ET  Reply   Trace   Private Reply  


#6. To: IndieTX (#5)

I left off the martini gif.

Allow me.


farmfriend  posted on  2007-07-09   0:52:58 ET  (1 image) Reply   Trace   Private Reply  


#7. To: farmfriend (#6)

Thanks!

Law Enforcement Against Prohibition

IndieTX  posted on  2007-07-09   1:19:48 ET  Reply   Trace   Private Reply  


#8. To: sourcery (#3)

In geologic time where plate tectonics and continental drift occur, 1 million years is hardly any time at all. Greenland was at essentially the same lattitude back then.

But time moved a lot faster back then!

Soon, in the near future, time will speed up again, and the continents will be whirling around so fast all of us will probably fly off of our feet, so everyone will have to crawl around like babies.

Freeper motto: I read, but do not understand, I write, but make no sense, I think, but nothing happens.

YertleTurtle  posted on  2007-07-09   5:19:42 ET  Reply   Trace   Private Reply  


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