Each earthquake magnitude is 33 times more powerful than the one before. So each jump in magnitude means a lot! This animation can help you picture it.
About 22,000 acres are now burning. Smoke from the fires shrouds southwestern New Mexico. Fire crews are standing by, waiting for the winds to die down.
Joplin tornado of May 22, 2011 was deadliest single U.S. tornado since 1950 and costliest tornado in world history. See videos. Learn how Joplin is rebuilding.
Picture an ancient turtle the size of a Smart car, with a shell large enough to be a kiddie pool. Scientists have found the fossilized remains of just such a specimen.
It was a very strong earthquake to shake the region, seismologists said. Older buildings suffered damage: collapsed roofs, cracks in buildings. At least four reported dead.