The Bannister Building looks distinct among the typical red-brick buildings on campus, yet students walking by, preoccupied by their phones and classes, fail to notice the 40-foot-long steel columns ...

In the middle of the exhibit hall at the University of Arizona’s Laboratory of Tree-Ring Research stands a 4,000-pound sample of a Giant Sequoia that began its growth in 212 A.D. and fell in 1915. The ...

The University of Arizona's "tree-ringers" are celebrating their move this weekend from "temporary" headquarters in the bowels of Arizona Stadium to a light-filled aerie above the stolid brick of the ...

Michael Worthington of the Oxford Tree-Ring Laboratory uses a drill to take a core sample from a wooden barn at Cremona Farm in Mechanicsville, Md. By studying the rings, Worthington can estimate when ...

Forests around the world have the capacity to pull carbon out of the atmosphere to battle global climate change. But how much carbon they actually absorb is a question that still needs answering, and ...

Having a solid estimate of the amount of carbon that forests can pull from the atmosphere is essential for global accounting of climate change—leaders are counting on forests to pull a good chunk of ...