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Clay tablets show that Babylonian astronomers tracked planets using a method that was thought to be invented 1,400 years later. In a way, scientists say, the ancient techniques were "very modern."

Many anti-obesity programs focus on children's diet and behavior during the school year. A new study is the latest of many that finds the weight gain comes when kids are out for summer vacation.

From San Diego State University to a Hillcrest bar, several spots in the city have organized gatherings for the highly anticipated matchup between Hillary Clinton and Donald Trump.

By expanding the genetic alphabet, San Diego researchers made one of the year's biggest breakthroughs, according to a leading journal.

Senomyx's new artificial ingredient promises to help reduce how much sugar Americans consume. But some scientists say we don’t know enough about its safety.

China says the 500-meter telescope detected a radio signal originating 1,351 light-years from Earth. One of its uses is scanning for signs of intelligent extraterrestrial life.

California is getting a huge economic bump from the state's life science industry. San Diego's biotechnology cluster plays a role in that success.

Many international students trying to get back to classes at NYU, MIT, Yale and other U.S. schools are now in limbo.

The idea behind "clean coal" is technology that would capture for reuse most of the carbon dioxide emitted by coal-burning power plants. Entrepreneurs aim to use similar tech to clean natural gas.

New Delhi suffers from intense air pollution every winter. On Monday, the stifling smog was particularly acute — in part because of the countless firecrackers set off for Diwali this weekend.