One sultry day last July, under skies dimmed by smoke from forest fires burning in Canada, Neil Pederson, 55, a senior forest ecologist with Harvard Forest, searched Green Lakes State Park for old ...

From Prometheus and Methuselah to trees in remote forests of China, these are the most ancient known trees on Earth. When you purchase through links on our site, we may earn an affiliate commission.

Professor Kevin Anchukaitis and graduate student Talia Anderson coring trees in Guatemala. This visual may only be used in conjunction with reporting on or posting of this news release. Credit must be ...