Arsenic is an element that is deadly to most living creatures, but bacteria living in California's Lake Mono thrive on it. Today NASA explains how those poison-eating organisms are changing the way we search for extraterrestrial life. » 12/02/10 2:30pm 12/02/10 2:30pm

Today NASA will hold a press conference revealing to the world the discovery of a form of life unlike any other on Earth. What twisted alien landscape gave birth to such a life form? Try California. » 12/02/10 11:30am 12/02/10 11:30am