Sarah Olson is a researcher for the Wildlife Conservation Society and joins us at a moment when Ebola virus is very much in the news due to a recent outbreak in the Democratic Republic of Congo. A primatologist, Olson has lately been studying hammer-headed fruit bats to understand how Ebola is transmitted to apes and also humans — research which could potentially control or prevent future outbreaks of the deadly disease — beside revealing new details on the behavior of this fascinating species. Plus we round up recent top news.

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