The end of the human race

Now that’s pretty BIG issue for any blog. How might it happen? And how might it be prevented?
For ideas on how the human race could end, look no further than a book I read recently by Martin Rees titled “Our Final Century”. You can read my review here.
For thoughts on how the human race could survive, look at the responses to Stephen Hawking’s question on Yahoo Answers. You can read them here.