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Podcast: Mass Extinctions, Pinecone Evolution, and More

4 March 2011 11:43 am
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Are we in the middle of a sixth mass extinction? Did dinosaurs influence the evolution of pinecones? And how did the African landscape influence how we see? Science's Online News Editor David Grimm chats about these stories and more with Science Podcast host Robert Frederick.

(Listen to the full Science podcast and more podcasts.)

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