In the shadows of Python Cave, Uganda, a leopard leaps from a guano mound—formed by bat excrement—and sinks its teeth into a ...

It was 1959 and Duguay, of Clearwater, Florida, had polio. It mostly preyed on children and was one of the most feared ...

Gilead Sciences has blamed the low rate of respiratory syncytial virus (RSV) infections last season for ending two midstage ...