How Can The Human Race Survive The Next 100 Years?

It's a question that requires a lot of speculation, and it was asked by physicist Stephen Hawking. His full question is "In a world that is in chaos politically, socially and environmentally, how can the human race sustain another 100 years?" From a lot of surfers he received a sackful of answers, some of which may be familiar to those who read a lot of science fiction. Click here to read what people had to say.