Fire-scarred cross-section of a ponderosa pine from the Santa ... the fire can damage the living tissue below the bark, leaving a fire scar. Tree-ring fire scars provide information about the ...

Here rules professor Thomas Swetnam, tree ring ... creates another scar," he says. "And another, and another, and another, and another, and another." Scars from thousands of sections show how ...

By cutting a cross-section of a tree stump, Parks points out how trees can carry scars from long-ago fires that were set every 10 to 30 years by the Bitterroot Salish tribe that lived here.

But unlike a tree ring history that's based on just ... The trees can grow over a lot of these scars, but in cross sections, that can be easily spotted and dated. "That way were able to establish ...

They reached that determination, in part, by studying the rings of trees collected from thousands of sites across the Western U.S. Cross-sections or ... Dark scars can denote wildfires.

(CBS4) - New trees are coming to burn scars in the Arapaho and Roosevelt National Forests. With the help of the National Forest Foundation, about 400,000 seedlings will be planted in June across ...