A guide in Yellowstone National Park has captured rare footage showing a baby bison wandering with its momma and herd on a wintry day in late March. It’s a sure sign that spring has arrived ...

I've been to 40-some countries and almost every state, but of everywhere I've roamed, I think Yellowstone ... can be brisk in early summer, with snow still piled high on the mountain peaks ...

The Yellowstone River is seeing notable flow changes based on records gathered at Livingston going back to the late 1800s.