4 ms·

Conservation I guess. And cheap existing land.

• StavrosK 14y ago
  Simpler explanation: Because we can't. As Neil Tyson says, we can't even accurately predict the weather a week down the road, you want to terraform something?
  • waterlesscloud 14y ago
    Of course, he also says that humans have had a preventable effect on Earth's climate.
  • ceejayoz 14y ago
    > As Neil Tyson says, we can't even accurately predict the weather a week down the road, you want to terraform something? Did he really say that? I'd think NDT would be acutely aware of the difference between short-term weather and long-term climate, given that he gets to fight climate change denialists using that absurd misunderstanding on a regular basis.
    • StavrosK 14y ago
      He is, and he did: http://www.reddit.com/r/IAmA/comments/ngd5e/i_am_neil_degrasse_tyson_ama/c38va48?context=1 http://www.reddit.com/r/IAmA/comments/ngd5e/i_am_neil_degras...