Friday May 21, 2010 Updated 5:44 PM PDT
Scientists announced Thursday that for the first time they have created a complete set of synthetic...
I'm so glad I didn't know until a few days ago that it is very possible that I might not exist at all...
A magnitude-5.1 earthquake struck the seismically active California-Mexico border region Tuesday, shaking a wide area of Southern...
Chronicle 5.19.10 4:00 AM
Europe's busiest airport closed early today as a dense cloud of volcanic ash drifts across England from Iceland, aviation authorities...
Chronicle 5.17.10 4:00 AM
Astronauts will not be sent by the United States to the Moon or Mars for at least a decade, but they can still get an idea of what it...
Chronicle 5.16.10 4:00 AM
The ice caps of Antarctica are largely untouched, clean, and - with the temperature around 60 below - very cold. This, it turns out...
Chronicle 5.16.10 4:00 AM
A small earthquake rumbled about six miles northeast of Hayward this morning, according to the U.S. Geological Survey. The quake...
Chronicle 5.15.10 6:23 PM
Space shuttle Atlantis thundered away on its final voyage to orbit Friday, hoisting an experienced crew of six and a full shipment of...
Chronicle 5.15.10 4:00 AM
Fifth-grader Lety Cavlan got a baseball autographed by Giants player Mark DeRosa on Friday at San Francisco's Exploratorium, where the...
Chronicle 5.15.10 4:00 AM
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