One tourist at Yellowstone National Park ignored all the rules and decided to cook a hot dog over a geothermal geyser.

Learn more about this new hydrothermal feature that could be connected to one from Yellowstone’s past.

Wolves culled the elk. Fewer elk means more aspens can grow. More beavers are attracted to the trees. It's called a trophic ...

Yellowstone is the only place in the United States where bison have lived continuously since the prehistoric age. Scientists ...

More than 100 years after bison from other regions were introduced to the park, the two genetically distinct herds have ...