Ancient Viruses Lurk In Frozen Caribou Poo
A 700-year-old caribou dropping from northern Canada holds surprisingly well-preserved viruses. There's no evidence the viruses are dangerous, but they are scientifically interesting.
virus
How Do You Catch Ebola: By Air, Sweat Or Water?
Americans have many questions — and misconceptions — about the deadly virus that's rapidly spreading in West Africa. We asked two scientists to explain more about how Ebola is transmitted.
World's Biggest Virus May Have Ancient Roots
The Pandoravirus is so big you can see it in an ordinary microscope. Scientists say its size may have helped fool amoebas and other potential hosts into eating it. But this virus doesn't pose a threat to humans. It's more of a Trojan virus than a surprise from Pandora's Box.