Are humans to blame for the coronavirus? How deforestation gives rise to pandemics

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Are humans to blame for the rise in infectious disease we're experiencing worldwide? In this episode of Think Again, NBC News correspondent Andrew Stern investigates the link between deforestation, habitat change and pandemics. From Zika to West Nile, Ebola to SARS, Nipah to CoVid-19, deforestation has had a hand in many of the world's worst viral outbreaks.