Stephen Hawking warns us (again): Abandon Earth or face extinction

[donatello]

Stephen Hawking says that it will be difficult for us to avoid nuclear holocaust in the future, as incidents threatening to cause one will be more frequent.

http://bigthink.com/ideas/21570

Many commentators have pooh-poohed the idea:
http://gizmodo.com/5607533/stephen-hawki...nity-again
http://news.cnet.com/8301-17852_3-20012990-71.html

I however tend to agree with Stephen Hawking, but I am quite doubtful about space flight/migration. What do you all think?

[Lije]

I too agree with Hawking. I don't think that humans can migrate to space anytime soon, but at the minimum we can try to develop space technology to harvest minerals that are short on Earth. Efforts like this keep my hopes up.