And medicine, law, business, engineering, these are noble pursuits and necessary to sustain life.

Last year scientists used this method to find the first planet known to have water and temperatures that could potentially sustain life.

Everything you need to sustain life, in fact.

For in this room, there were no bottles for intravenous feeding, no tubes, no machines to sustain life.

It will be half-waterlogged swamp and half-arid desert and either extreme will be virtually unable to sustain life.