Life on a Far-Off Moon?

The article focuses on two studies that aim to uncover existence of primitive life in solar system. It states that scientists at Cornell University under Astronomer-Exobiologist Carl Sagan conducted a study on Saturn's largest moon Titan which revealed that it has a thick atmosphere leaking small amounts of hydrogen gas. It also mentions that study on the moons of Jupiter such as Europa and Ganymede suggests that both bodies appears to be covered by water ice which resembles to earthly frost.