habitable

He imagined a future in which “resources and livable conditions are scarce. Scarcity is the rule, and requires a degree of self-interest. Population problems are beyond solution by migration. No habitable unclaimed lands remain.”

Agricultural production uses up just under half of the planet's habitable land, which represents plenty of room for intervention.

"So if there are habitable environments on Mars, those may be now deep underground."

This new understanding that the shape and depth of ocean floors is perhaps the greatest influencer of carbon sequestration can also aid the search for habitable planets in our universe.

He said none of the apartments in the building are habitable.