Podcast: Arctic Camels, Waking Up During Anesthesia, and Cooling Volcanoes

Did camels once roam what is today the frigid arctic? Is there a way to predict whether a patient will come out of anesthesia during surgery? And are volcanoes cooling the world? 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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