Wildfires continue to rage across parts of Northern California and Washington, producing images that look familiar to many in Colorado.
Originally published on Fri August 24, 2012 5:50 pm
First of a five-part series
The history of fire in the American Southwest is buried in a catacomb of rooms under the bleachers of the football stadium at the University of Arizona.
Here rules professor Thomas Swetnam, tree ring expert. You want to read a tree ring? You go to Tom. He's a big, burly guy with a beard and a true love for trees.