John Rodgers

Oct. 23, 2009

Extinctions from Algae?

Many scientists attribute the world's great extinction events to major catastrophes such as asteroid strikes and massive volcanic eruptions. We'll talk with researchers exploring an alternate theory -- that massive algal blooms led to mass extinctions.

extinction, algae, asteroid, dinosaur

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Michael Pollan Talks Plants and Food

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Age of Wonder

Ira talks with Richard Holmes, author of 'The Age of Wonder: How the Romantic Generation Discovered the Beauty and Terror of Science.'

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