The Ponderosa fire in northern California threatens another 900 homes. The Ponderosa fire is 57 percent contained. Elsewhere in the West, states are tallying the rising costs of big wildfires this season.
A panoramic view of Mars sent back to Earth from NASA's Curiosity rover shows a terrain scientists describe as similar to the Mojave Desert in Southern California. Curiosity will begin a four-day software upgrade over the weekend.