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

Andrew Gray, an associate professor of watershed hydrology at UCR, weighs in on the threats to life and infrastructure posed by fast-moving debris flows, and how residents can best respond.

Reducing the number of beetles that weaken and destroy trees improves conditions for aphids living in them. The ants “milk” the aphids to excrete honeydew, which becomes their primary food ...