Orange County communities built on hillsides prepare for possible landslides that may be caused by the powerful winter storm rain.

NASA scientists used satellite measurements to map out local subsidence and uplift across the Golden State, which plays into ...

As a principal engineer for the county’s Public Works Department, Klippel’s job is to try to stop catastrophic flows of mud, ...

In the Arizona desert, researchers are learning so much more about the peoples who have inhabited this land since antiquity ...