The cloud cover isn't what it used to be, and scientists say it is helping fuel Earth's hottest temperatures on record.

Rising temperatures are fueled, in part, by declining cloud cover — which could be a potential climate feedback loop.

One trend appears to have significantly affected the reduced planetary albedo: the decline in low-altitude clouds in the northern mid-latitudes and the tropics. In this regard, the Atlantic ...

Seen from afar—as it first was, by human eyes, on Christmas Eve 1968—Earth is a wonder. When the astronauts of Apollo 8 saw ...