After 40 years, man is preparing to return to the Moon. But this time the astronauts won't just land on the Moon - they plan to stay.

Scientists believe the real prize is trapped in the Moon's rocks. It contains large deposits of an extremely rare gas called Helium-3. Could Helium-3 be mined and used as a new source of almost inexhaustible, clean and pollution-free energy on Earth? Whoever succeeds in transporting Helium-3 back to Earth could solve the world's energy crisis.