The survival of the human race depends on its ability to find new homes elsewhere in the universe because there's an increasing risk that a disaster will destroy Earth, world-renowned physicist Stephen Hawking said Tuesday.Hmm. Does he have a point? Should we be preparing just in case a giant asteroid squishes the Earth like a bug or Al Gore's dreams suddenly come true? Are such things as establishing colonies on Mars really feasible in the time frames Hawking suggests? Or has he just watched too much Star Trek lately? Discuss.
Humans could have a permanent base on the moon in 20 years and a colony on Mars in the next 40 years, the British scientist told a news conference.
"We won't find anywhere as nice as Earth unless we go to another star system," added Hawking