Michael A'Hearn

Nov. 12, 2010

A Trip To A Comet

Last week, a NASA mission paid a visit to comet Hartley 2, flying by at a distance of just a few hundred miles. We'll talk about what they learned.

comet mission epoxi nasa space

Jan. 29, 2010

Tracking Near-Earth Objects

The US spends $4 million each year to search for comets or asteroids that could threaten the planet. That's not enough to get the job done, according to a new report from the National Research Council.

neo, asteroid, comet, meteor, collision, rock, space, deep impact, bruce willis

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Michael Pollan Talks Plants and Food

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Tar Noir: Paleoforensics at the La Brea Tar Pits

\tThe La Brea Tar Pits are  world-renowned fossil sites for good reason—they're the mass graves of thousands of Ice Age creatures, each with a story to tell. Researchers at the nearby Page Museum clean the asphalt from the fossil remains, and using paleoforensics, recount the grim details of their deaths. In the process, clues emerge about what life was like in prehistoric Los Angeles.

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