Memorial Day weekend marks the unofficial start of the high season in Wyoming’s Grand Teton and Yellowstone national parks.

A bison in Yellowstone National Park appeared to stumble into the scalding water of Grand Prismatic Spring, causing its death as tourists looked on during the park's busiest season. Subscribe to read ...

Looking to avoid the crowds at Zion or the Smokies? Our national parks columnist shares the intel on overlooked parks that ...

Brain-eating amoebas are thriving in Yellowstone and Grand Teton national parks, and they’re probably more widespread than most people realize.

If you’ve ever wondered how many bathtubs’ worth of water Old Faithful spews upwards on any given eruption, then you’re not alone. A team of researchers in Yellowstone National Park asked that very ...

Get any of our free daily email newsletters — news headlines, opinion, e-edition, obituaries and more. Since Yellowstone National Park was established in 1872, park managers have worked to prevent and ...

WASHINGTON — Yellowstone's Echinus Geyser, which is the largest acidic geyser in the world, came out of five years of dormancy last month to start erupting several times a day, according to the U.S.