Some people think that astrobiologists, who study life elsewhere in the universe, have nothing to do...yet. But nothing could be further from the truth. The search for life on other planets begins with research, the domain of NASA's Astrobiology Institute, which is, among other things, studying the strange yet familiar landscape of Titan, Saturn's largest moon. Composed of ice and maintaining a nitrogen atmosphere and rivers of liquid methane, Titan still shares many geological and natural features with Earth, from hills and valleys to similar... More >>>