Podcast: Crushing diamonds, marijuana abuse, and more

What does Star Trek have to do with diamonds under pressure? Can heavy marijuana use harm the brain’s pleasure center? And how prevalent is sexual harassment in scientific fieldwork? Science's Online News Editor David Grimm chats about these stories and more with Science's Sarah Crespi.

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A 3D plot from a model of the Ebola risk faced at different West African regions over time.
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