There are river channels and flood plains galore on the planet's surface, and even a hemisphere-wide depression that many interpret as an ocean bed.

ECONOMIST: A drought on Mars

From there, it is on to the Southern Hemisphere - Cape Town, South Africa - before the gruelling Southern Ocean.

BBC: Richards heads round globe

Navigating through the CD-Rom, a child can explore five different branches of Antarctic research: ocean life, glaciers, astronomy, albatrosses and a strange phenomenon called whistlers, which are faint echoes of Northern Hemisphere thunderstorms.

BBC: CD-Rom's ice cool music