Read about the challenges faced by Sterling Klippel and his stormwater crews as they work to prevent catastrophic mudslides ...

Mudslides are dangerous torrents that are usually referred to by geologists and first responders as debris flows.

Snow and ice in whiteout conditions contributed to as many as 30 cars involved in a pileup on a major highway connecting ...

On Friday, the storied coastal road had dissolved into a river of mud and debris after a powerful rainstorm sent those burned ...

Debris flows brought on by the strongest atmospheric river of the season swept a car off a southern California highway and into ...

The Los Angeles fires were burning evidence of how dangerous this delusion is. The fires were a bonfire of bad ideas that had ...

Snow and ice in whiteout conditions contributed to a pileup of as many as 30 cars on a major highway connecting Oregon and ...

Our landscape practice, led by Katherine Harvey, has always understood that urban design is an act of collective imagination.

In extreme conditions, no amount of brush clearance can guarantee protection. Indeed, too much clearing can in fact leave ...

Rain on burned hillslopes can trigger dangerous floods and debris flows. Those debris flows can move with the speed of a ...

The second atmospheric river in a pair of storms will bring more rain and cooler temperatures to the Los Angeles area.

Around the world, other communities are experimenting with ideas that Los Angeles could borrow as it rebuilds from disastrous ...