I guess people just can't comprehend the sheer size of the Earth and the massive amount of resources it still has. Just check this graph out: http://www.landart

I guess people just can't comprehend the sheer size of the Earth and the massive amount of resources it still has. Just check this graph out: http://www.landartgenerator.org/blagi/archives/127 http://www.landartgenerator.org/blagi/archives/127 That's the surface area we need to power EVERYTHING with solar power (which is VERY ineffective at the moment). Add to that wind power (lower in the article), and we're golden for another hundred years. We don't even need to go to other solar systems (which seems impossible at the moment) - just start colonizing and mining the nearby planets/asteroid field (it's very very hard, but not impossible). Nuclear submarines are a good example of relatively self-sufficient bases/colonies. With time, it's possible to slooowly build something like that in space...