Podcast: Outcast Planets, Vibrating Odors, and More

Could life exist on worlds ejected from their planetary systems? Do vibrating molecules give us our sense of smell? And have researchers found a better way to kill harmful bacteria? Science's Online News Editor David Grimm chats about these stories and more with Science Podcast host Robert Frederick.

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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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