Life can also push planets away from equilibrium. And assuming that alien life produces gases of some kind, they could push a ...

NASA's first effort to retrieve samples from an asteroid will send a capsule that contains extraterrestrial pebbles and dust ...

Most fuels contain carbon and/or hydrogen. When hydrogen atoms are present in a fuel, they are oxidised to water. Water is not a pollutant. When there are lots of oxygen atoms present during ...