At any given time, about two-thirds of Earth's surface is covered by clouds. Overall, they make the planet much cooler than it would be without them. Subscribe to our newsletter for the latest ...

Friday: Mostly cloudy, breezy, and warm with limited P.M. showers/rumbles around (20%). High: 82°. Saturday: Variably ...

The clouds over the Bay Area have been spectacular in recent days with vaporous masses of condensed moisture creating poetry overhead. In San Francisco, we're used to looking up and seeing either blue ...

Happy Monday evening to one and all.We’re wrapping up a warm and pleasant start to the week, but changes are already on the ...