Sacramento Bee: Wildfire has marched across the West for centuries. But no longer are major conflagrations fueled simply by heavy brush and timber. Now climate change is stoking the flames higher and hotter, too. This view, common among firefighters, is reflected in new studies that tie changing patterns of heat and moisture in the western United States to an unprecedented rash of costly and destructive wildfires. Among other things, researchers have found the frequency of wildfire increased …