New study upends timeline of Iroquoian history

New research by an international team raises questions about the timing and nature of early interactions between indigenous people and Europeans in North America.

Using tree ring records to decode Earth's climate history

Ed Cook is one of the founding directors of the Lamont-Doherty Earth Observatory Tree-Ring Laboratory. During his 43 years at Lamont, Cook has used tree rings to decode past climate patterns and advance understanding of drought—research ...

Searching for clues on extreme climate change

The remains of a buried pine forest at the foot of Mont Saint Genis in Southern France yield insightful information on a drastic climate change event. The pine tree stand initiated around 12,900 years ago during the relatively ...

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