Russell Schnell

Oct. 12, 2012

Tracking the Ozone Hole, as It Waxes and Wanes

The Antarctic ozone hole reaches its largest size by late September -- but then it disappears again.

ozone hole, atmosphere, stratosphere, cfcs, ozone depletion, climate

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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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