Reply #25: You do realise the world's population is no longer exponentially increasing?

[muriel_volestrangler]

The growth rate is now about half that of the early 60s - http://www.census.gov/ipc/www/worldpop.html .

Yes, it would be good to establish people on another world, in case of a huge meteorite (not that all life has been wiped out by one before - and human knowledge gives us a better chance of survival than just about any other large species). But if we're going to form a world, it'd be easier to fix Earth, which is almost perfect for us already.