Stephen Hawking famous British astrophysicist and best-selling author has turned to Yahoo Answers, a new trait in which anyone can post a query for fellow Internet users and can get numerous views. By Friday afternoon, nearly 17,000 Yahoo Inc. users had responded.

Hawking's question was "In a world that is in chaos politically, socially and environmentally, how can the human race sustain another 100 years?"

Some of the answers were petite "get rid of nuclear weapons" and others vague "Somehow we will." Many were doubtful: "I don't think it is possible unless we expand into space". A number of people suggested "thinking differently, ending bickering or fostering cooperation".

Hawking is one of 10 personality questioners Yahoo has put on as part of its "Ask The Planet" campaign.

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