In the beginning, there was Pico Canyon. The location in California’s Santa Susana Mountains entered history in 1865 when a hunter named Ramon Peria noticed dark, green-colored oil in a spring. Peria ...

An aerial view of crews attempting to extinguish a large fire and explosion that occurred at the Chevron Refinery in El Segundo overnight Thursday. (Allen J. Schaben/Los Angeles Times) The explosion ...