Latest from extinction
November 24, 2014 by Eric Simons
Two biologists discuss Earth's alarming extinction rate.
July 01, 2001 by Joe Eaton
The Blackhawk Quarry in Danville points to a time, nine million years ago, when the Bay Area was inhabited by elephant-like browsers, herds of three-toed horses, packs of bone-crunching dogs, and an eight-foot-long-sabertooth salmonid, Where did they all go?