Posted by tourdemars to Life on Mars at December 8, 2003 12:00 PM

Four Bay Area scientists just got back from exploring one of the highest lakes on Earth -- a frigid, emerald-green jewel 19,400 feet up in the crater of Licancabur volcano in Bolivia. Their goal: To see how life might survive in an environment so harsh that it may be the closest thing on the planet to conditions on Mars.