Sitting in the heart of Yellowstone's West Thumb area is Yellowstone Lake, the park's largest body of water and the largest high-elevation lake above 7,000 feet in North America. The lake is 20 ...

Researchers surveyed the DNA of more than 200 cats spanning the last 9,000 years, including ancient Romanian cat remains, Egyptian cat mummies, and modern African wildcat specimens.

Mammoth Hot Springs is ranked #5 out of 17 things to do in Yellowstone National Park. See pictures and our review of Mammoth Hot Springs.