There have been dozens of confirmed human cases of bird flu in the U.S. this year. Experts discuss the symptoms, risks and ...

Bird flu H5N1 has infected dozens of people in the U.S. this year. Could it be the next pandemic? Experts explain the threat ...

Grange began like many out-of-staters in bear country — believing grizzlies were mindless carnivores that would attack any human who crossed their path.