Worth watching this 2 minute video from Stephen Hawking and the Big Think. Hawking says: "If we are the only intelligent beings in the galaxy, we should make sure we survive and continue ... we have made remarkable progress in the last 100 years, but if we want to continue beyond the next 100 years, our future is in space." Wow.
There is more background on the Big Think website, which has been publishing 'one radical new idea' each day this month. You might also want to have a read of Big Idea #16 (Parents Don't Matter), or #1 (Drug our Drinking Water).
