Mar. 29, 2013
How Cosmic Collisions Have Shaped Our Solar System
Some of our solar system's landmarks can trace their origins to massive impacts.
Oct. 19, 2012
Scientists in the Dark Over Birth of the Moon
Two new studies present very different ideas about how the Moon was formed -- a riddle that one scientist says may never be solved.
Aug. 05, 2011
Are The Moon’s Highlands Due to A Cosmic Collision?
Planetary Scientist Erik Asphaug describes the evidence for an ancient lunar collision.
AVAILABLE IN ITUNES
Michael Pollan Talks Plants and Food
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Ira Asks: How Do They Make Eyeglasses?
You deliver your prescription to an optician, and they return with a pair of eyeglass lenses tailored precisely to your personal vision quirks. But how?
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