Ice core data supports ancient space impact ideatags: Greenland, BBC News, North America, Ice cores, Clovis people
New data from Greenland ice cores suggest North America may have suffered a large cosmic impact about 12,900 years ago.
A layer of platinum is seen in ice of the same age as a known abrupt climate transition, US scientists report.
The climate flip has previously been linked to the demise of the North American "Clovis" people.
The data seem to back the idea that an impact tipped the climate into a colder phase, a point of current debate.
Rapid climate change occurred 12,900 years ago, and it is proposed that this is associated with the extinction of large mammals - such as the mammoth, widespread wildfires and rapid changes in atmospheric and ocean circulation....
comments powered by Disqus
- Were Neanderthals a sub-species of modern humans? New research says no
- Irish archaeological sites explain huge European population fall
- Reactions to JFK Assassination Included Fear of Possible Soviet Strike against U.S.; Desire to "Bond" with LBJ
- Swiss Museum to Announce Decision on Nazi-Looted Art Next Week
- What Happened the Last Time Republicans Had a Majority This Huge?
- Juan Cole says the postwar Middle East governments were modeled on the Soviet Union, though not communist (interview)
- Ted Widmer picks the 5 best presidential books worth reading
- AHA backs California's LGBT History law
- Cultural historian traces history of baby food
- Jules Witcover identifies the best and worst veeps in US history in an interview about his new book