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The astrophysicist says that participating in a "great unfolding of a cosmic story" should make us feel large, not small. This spring, Tyson hosts a TV series called Cosmos: A Space-Time Odyssey.

Don Lessem was the dinosaur adviser for the first Jurassic Park, a job he says sounds more impressive than it was. His real big-dinosaur break happened years later, thanks to a blurry photo of a bone.

Airs Saturday, January 11, 2014 at 2 p.m. on KPBS TV

Two Americans and a German get the prestigious prize for pushing back the limits of what had long been thought an insurmountable barrier to viewing individual molecules.

Our ability to get along with folks who aren't relatives could be a legacy of our hunter-gatherer ancestors. And it's rooted in the fact that those societies had gender equity.

We're sure glad ostriches and emus don't fly. But DNA evidence now suggests their small ancestors flew to each continent, where they evolved independently into giants with stubby wings.

Polar bears continue to take a hit in regions with the greatest loss of snow and ice, the latest report card on the Arctic shows. Meanwhile, plankton are thriving as the sea heats up.

Who says monsters aren't real? Two (oarfish) have washed up dead in SoCal in the last week and NOAA scientists in La Jolla have one in the lab up for dissection.

Two doctors wrote a book that probes the environmental, biological and socioeconomic factors contributing to early puberty. These girls face risks like anxiety and depression, one author says.

Eduardo Campos, an economist who was running for president as the leader of the Brazilian Socialist Party, has died in a plane crash southeast of Sao Paulo. He was 49.