Uncertainty in climate models could mean Earth systems are perilously close to their tipping points, scientists warn.

Thunderstorms, produced when air rises through the depth of the troposphere, are notoriously difficult to represent in global climate models. Whether air parcels have the energy to rise or not does ...

If humans want to live in space, whether on spacecraft or the surface of Mars, one of the first problems to solve is that of water for drinking, hygiene, and life-sustaining plants. Even bringing ...