Scientists investigate animals for germs that could spill over into people
Geoff Brumfiel, NPR senior science editor and correspondent, and Short Wave reporter Emily Kwong explain how bat coronavirus research works, what zoonotic spillover is, and why some scientists worry the lab theory could undermine the kind of scientific cooperation needed to get a grip on this pandemic.
Scientific evidence overwhelmingly points to wildlife, and to bats as the most likely origin.