Though bison are well-suited for the harsh climate of Yellowstone National Park, the winters from 1995 to 1997 were particularly severe in the high country, forcing bison to leave the park in ...

A cold morning mist lingers over the wide valleys of Yellowstone National Park as a mighty herd of bison rumbles across the ...

In addition to fewer cattle grazing near the park today, researchers say elk have transmitted brucellosis to cattle — not roaming bison. For instance, a 2020 study found that elk had transmitted ...

On Thursday, a Federal District Judge Brian Morris for the District of Montana heard several motions in the State of ...

Although elk infected with brucellosis freely roam southwestern Montana and have been responsible for infecting cattle with the disease, “bison in Yellowstone present a much higher, much more ...

Back then, the reasoning was a simple but scientifically-flawed fear that bison would transmit brucellosis to cattle, which can cause them to abort and threatened Montana’s “brucellosis free ...

I first suspected malaria but after it persisted even after I had finished my dose, I went to the hospital and was diagnosed with brucellosis. My doctor told me it is mostly gotten from cow milk.

Editor’s Note: This story accompanies the May 2016 issue of National Geographic magazine, devoted entirely to America’s first national park. Find more at natgeo ...