The false-color image in this true- and false-color image pair shows the extent of the large Twitchell Canyon Fire burning in the mountains of central Utah on September 21, 2010.
One of a number of large wildfires that have affected northern California in 2012, the Chips fire burned more than 75,000 acres by the time firefighters had contained it.
Land recently burned in Southern California’s Bull Fire is charcoal black in this false color image taken on August 1, 2010, when the fire was nearly contained.