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Sally Ride, the first American woman to fly in space, died Monday in La Jolla after a 17-month battle with pancreatic cancer, according to her website, www.sallyridescience.com. She was 61.

Airs Wednesday, June 22, 2016 at 9 p.m. on KPBS TV

Before NASA can send a manned mission to Mars, it needs to know more about how extended time in space affects the human body. Mark and Scott Kelly are the perfect subjects for such an experiment.

Snowpack in the Sierra Nevada is one-third of what it should be this time of year. Despite that, state and federal water managers say they will take advantage of recent precipitation and send more water to central and southern California.

Alaya Dawn Johnson's new young-adult novel, The Summer Prince, follows three friends in a far-future Brazilian city as they deal with questions of art, love and technology. Reviewer Petra Mayer says Johnson "walks the line between literary lyricism and good old-fashioned science fiction storytelling."

Tobacco users often have to pay higher premiums for health insurance, and it's not clear if switching to e-cigarettes will help them escape that fate. A lot depends on what federal agencies decide.

Airs Wednesday, November 4, 2015 at 11 p.m. on KPBS TV

A study on the wandering mind had a simple request: Just think. But many participants couldn't sit still for very long, and they even were willing to shock themselves to avoid doing nothing.

These cluster maps give us a two-dimensional look at the complex arguments Americans posted on the topic of net neutrality. One theme in the comments had to do with the American dream.

How the class divide is widened by gaps in counseling kids for college.