Here's how Curiosity will use its laser to search for the ingredients of life on Mars

NASA's Curiosity is set to make its historic landing this coming Sunday, August 5. Once settled, the rover will get to work analyzing the Martian surface and atmosphere for signs that the planet was once capable of harboring life — or might be again. But what does it mean to search for "potential" habitability? »8/03/12 5:22pm8/03/12 5:22pm