When temperatures dip below zero in Yellowstone National Park, tourists are scare but the park’s 4,500 bison carry on out of necessity.

Yellowstone’s famous geothermal areas are a lifesaver for the bison in winter. Those steaming hot springs and geysers aren’t just cool to look at; they create little pockets of warmth where ...

MAMMOTH HOT SPRINGS, Wyoming – Yellowstone National Park’s winter season begins Sunday ... Expect to encounter bison and other wildlife on park roads. Slow down or pull over until they ...

It’s no secret that Yellowstone National Park can be jampacked in the summer, when up to 1 million people jockey for space ...

The park is home to 67 species of mammals—including moose, bison, elk, and two species of ... Yellowstone include Hayden Valley and Mammoth Hot Springs. And while Yellowstone mostly closes in winter, ...

This section of Yellowstone is full of steamy geysers, ice-covered bison and the Old Faithful Snow ... and the Mammoth Hot Springs Hotel also stays open during the winter months. For a cozy mountain ...

Photographer Drew Simms braved extreme winter conditions in Yellowstone National Park to document its wildlife enduring a freezing temperatures as low as -37°F (-38.3°C). Over a week-long expedition, ...

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 ...

From spring 2014 until summer 2015 ... are extremely low. In winter Yellowstone can be a tough place for grazers; to find grass, bison sometimes use their massive heads to plow away deep snow.

Yellowstone's bison are under threat from the moment they cross the park's boundary. Outdated management plans and misunderstandings have led to the routine roundup and slaughter of this wild icon of ...

If you're looking for an incredible springtime bike ride in the national parks, head to Yellowstone National Park, where you can pedal between West Yellowstone, Montana, and Mammoth Hot Springs in ...