Bah, you're being too pessimistic. If we don't invent a new, cheap and safe fuel source I'm sure we'll have invented cheap and safe space travel so we don't hav

Bah, you're being too pessimistic. If we don't invent a new, cheap and safe fuel source I'm sure we'll have invented cheap and safe space travel so we don't have to worry about that crap. Then all we have to do is use untried and untested techniques to change the atmosphere on Mars or Venus to make the planets habitable. Didn't you ever read a sci-fi novel? Geeze, you're such a Buzz Killington :p