Saturn's Moon Titan -- Another Earth?

Even with a surface temperature of -180ºC, Saturn's moon, Titan, could be another Earth. It rains liquid methane from its icy cold skies. There's evidence of lakes filled this liquid methane. There are other surprising phenomena found on Titan's surface -- dunes made of enormous quantities of organic material that could contain the building blocks for DNA, as well as volcanoes that spew plumes of viscous "lava" composed of super-cooled water mixed with ammonia. Today, astrobiologists are conducting studies on the possibility that life could be present on Titan. This program reveals the latest findings about one of Saturn's most fascinating moons.