Advances in technology have reopened the debate over terraforming Mars, shifting it from an impossible dream to a long-term scientific and ethical question.

What would it mean to abandon Earth wholesale? The proposition to throw one’s hands up and forfeit our planet is a seductive one — things are looking pretty irredeemably grim. As the world continues ...

Advances in synthetic biology, planetary engineering, and ultra-low-cost launch systems have dramatically altered how ...