California's groundbreaking environmental law barring oil and gas drilling near sensitive sites faces a federal legal ...

Early in 1905, the first of five floods surged down the diversionary canal, and attempts to close it became futile. By the ...

Seismic tremors reveal a shallow fragment of ancient tectonic plate beneath Northern California, helping explain damaging ...

The Diamond Valley Lake reservoir in Riverside is nearly full, Prado Dam in Corona collected enough water to serve more than ...

Seismologists have discovered hidden faults at the Mendocino Triple Junction by tracking tiny earthquakes using a new ...