From comedy icon Will Ferrell and Red Hot Chili Peppers drummer Chad Smith to Oscar-nominated Lady Bird actor Saoirse Ronan and pop star Chapell Roan, here are 19 celebrity doppelgängers duos — all of ...

Vaccinating vampire bats against rabies can help prevent the spread of the disease to livestock and humans. NPR's Scott Simon talks with epidemiologist Tonie Rocke about a new way to vaccinate bats.