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Raul Guerra was adopted, so his DNA couldn't be matched to blood relatives. Scientists instead turned to an emerging technique that linked his bones to the drinking water in the places he grew up.

How do we accurately forecast the amount of water that will be available any given year? It's not easy. But some Colorado scientists think they're onto a possible solution — inspired by Pokemon.

The University of California, Irvine study found that combat exposure is almost as likely to cause grief as it is to lead to PTSD.

A study of 11 sleeping brains sheds some light on the mysterious link between sleep problems and Alzheimer's disease. The flow of cerebrospinal fluid through the brain appears to be the key.

Researchers identified a strain of bacteria that flourishes in the guts of athletes after exercise. When transferred to mice, it gave a big boost in endurance. Could runners' probiotics be on the way?

Airs Tuesday, Oct. 16, 2018 at 9 p.m. on KPBS TV + Wednesday, Nov. 7 at 9 p.m. on KPBS 2

Former California Assemblyman Nathan Fletcher is one of five candidates in the race to represent District 4 on the San Diego County Board of Supervisors. He’s a Marine combat veteran and teaches political science courses at UC San Diego. He is a Democrat.

In the search for alternatives to coal and gas, some European countries have turned to a very old fuel. They're importing wood from the United States. Some environmentalists say it makes no sense.

Gen. Qassem Soleimani was killed Friday in Baghdad. The U.S. secretary of defense said Soleimani "was actively developing plans to attack American diplomats and service members throughout the region."

Officials have been altering names to become more Hinducentric. "It is very dangerous for national integrity and unity," says a historian. The changes accelerated ahead of this year's elections.