The aim of this applet is to teach about the balance of global water, land coverage, atmosphere and cloudiness required to create a "liveable planet". (See instructions, below).
Your goal is to make a habitable planet by adding enough Water, Atmosphere and Clouds to reach a global average temperature of about 15°C (59°F). You can mix and match, add or remove.
Contest! Who can make the planet livable in the least number of years???