Never-ending woes for park officials as America's premier National Park battles raging fires and deadly diseases ...

A park employee at the Grand Canyon was exposed to hantavirus, and a separate case of exposure to rabies in the park has also been confirmed.

On a small, gently rocking research boat anchored just offshore in Chesapeake Bay, I lowered a sterile plastic bottle into ...

According to an autopsy, the man died from a severe lung infection caused by Yersinia pestis, otherwise known as the Black Death or the pneumonic plague, NBC reports. (The pneumonic plague is spread ...