Edward Thommes

Aug. 08, 2008

Solar Systems and a Mysterious Cosmic Ghost

How does a disk of gas and dust turn into a solar system?A new study suggests conditions had to be just right to make our solar system. Plus, a mysterious cosmic object is stumping astronomers.

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Michael Pollan Talks Plants and Food

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Oliver Sacks: Hallucinations

In his latest book, neurologist Oliver Sacks explores the strange world of hallucinations, and documents his own experiments with psychedelic drugs.

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