YELLOWSTONE NATIONAL PARK, Wyo. - A study of microscopic organisms that inhabit the park's hot springs may help NASA (news - web sites) researchers in their efforts to find life on Mars. The organisms, called thermophiles, have lived in the boiling waters of springs in Yellowstone National Park for billions of years. By studying their fossil remains and how they have changed over time, scientists with NASA and Lockheed Martin Corp. are forming a picture of the history of life on Earth and the planet's climate, according to the Yellowstone Park Foundation. Definitive evidence of life on the Red Planet...
