As the climate warms, melting snow and ice are revealing how Earth looked ... was like 6,000 years ago," Whitlock told the ...

A study by geophysicists from UC Berkeley and their Italian and French colleagues has shed new light on Earth's last major ... of instability lasting over 6,000 years. This phase included two ...

Thirty ancient whitebark pines, preserved for nearly 6,000 years, were found 180 meters above ... rising global temperatures are now unearthing Earth's frozen past. Professor Cathy Whitlock ...