Since the 1970s, U.S. wildfires have been on the rise, in part due to climate change.
The year 2006, for instance, was one of the worst fire years in history. More than 7 million acres burned across the American West.
Scientists say the region can expect more of the same in the future, as warming brings the conditions that fan firestorms, while some lands in the drought-stricken Southwest could become too barren to burn.
(Video courtesy of Climate Central)