Buzz Aldrin calls for humans to colonise the Red Planet
Nearly half a century later, the dreams that once seemed so tangible now look more remote than ever. The last man to walk on the Moon was Eugene Cernan, who made the long trip home in December 1972. Since then, humans have been content to orbit the earth, in the realms occupied by satellites and the International Space Station. But we have never again broken free.
Now, one of the original lunar pioneers believes the time has come to make another great leap for mankind. Buzz Aldrin thinks that manned missions to Mars should take place sooner rather than later - within the next quarter of a century. And we shouldn't stop there. He thinks we should begin planning a permanent colony on the Red Planet.