A shaft of golden light from the cave’s mouth provides warmth as the expedition’s scientists enjoy lunch 80 feet below the opening of Natural Trap Cave.

A Trove of Ice Age Fossils Buried in a Wyoming Cave Is Rewriting Our Understanding of Prehistoric Animals

At a site known as Natural Trap Cave, a team of scientists are rappelling down to uncover the secrets of what the Earth was like during the Pleistocene

Grizzly 399 (left) reigned as the "Queen of the Tetons" until her death in October 2024.

Male Offspring of Grizzly 399—the ‘World’s Most Famous Bear’—Killed by Vehicle in Grand Teton National Park

The 5-year-old boar known as Grizzly 1058 was part of a rare litter of four cubs born in 2020

The papier-mâché decoys have been placed in a 100-acre field south of the Jackson Hole Airport runway in a bid to attract greater sage-grouse.

Threatened Birds Are Trying to Mate Near a Hazardous Airport in Wyoming. Can Papier-Mâché Decoys Lure Them to Safety?

At Grand Teton National Park, officials have placed handmade look-alikes in a field south of the runway to encourage greater sage-grouse to relocate

A skull of the Triassic amphibian Buettnererpeton bakeri gets uncovered for the first time in 230 million years. Researchers found it in a cache of skeletons that were well-preserved and appear to be relatively undisturbed over time.

Enormous, Crocodile-Sized Amphibians Mysteriously Died Together in Wyoming 230 Million Years Ago

Paleontologists found a group of four-legged Triassic creatures preserved in the same bone bed—but they don’t know what killed the animals

Grizzlies are starting to emerge in Yellowstone and Grand Teton national parks. They're looking for the carcasses of animals that died over the winter.

Grizzly Bears Are Emerging From Their Dens in Yellowstone, Grand Teton National Parks

Adult males are waking up from their winter hibernation—and they’re on the hunt for food

The 315-page police docket from 1904 is bound in red leather with gold accents.

Cool Finds

This 120-Year-Old Police Docket Documented Crimes Like Reckless Horse Riding

Discovered in a thrift store, the historic docket lists incidents that occurred in the town of Casper, Wyoming, in 1904—including “reckless riding [of a horse]” and “keeping a house of prostitution”

The trees became visible as an ice patch melted on the Beartooth Plateau, which is part of the Greater Yellowstone Ecosystem.

Melting Ice Reveals Remains of 5,900-Year-Old Trees in Wyoming, Uncovering a Long-Lost Forest

Researchers discovered more than 30 dead whitebark pine trees that were entombed in ice for millennia, representing a bygone ecosystem that could teach us about climate change

Imperial Geyser is one of the many hydrothermal features that draw visitors to Yellowstone National Park.

Will Yellowstone Erupt Soon? Scientists Are Using New Techniques to Find Out

Using magnetotellurics, researchers produced a detailed picture of the magma beneath Yellowstone, offering insights into a distant future of possible volcanic activity

A fossil skull of a prehistoric amphibian, found in a 230-million-year-old burrow in Wyoming, turned out to be from an unknown species.

A Paleontologist Cracked Open a Rock and Discovered a Prehistoric Amphibian With a Clever Survival Strategy

Named “Ninumbeehan dookoodukah” by Eastern Shoshone students and elders, the creature burrowed in riverbeds to stay moist during extreme droughts

Micro-CT scans of the bone needles and the other examples of bone they were compared against

New Research

These Delicate Needles Made From Animal Bones May Have Helped Prehistoric Humans Sew Warm Winter Clothing

Researchers have discovered 32 needle fragments made from the bones of smaller animals. The tiny tools may have been used to sew insulated garments during the last ice age

Grizzly 399, along with one of her cubs, in Grand Teton National Park in 2021.

The ‘World’s Most Famous Grizzly’ Was Killed by a Car. Was Her Death Preventable?

Grizzly 399 became a celebrity of Grand Teton National Park in her lifetime. Now, her death has drawn attention to wildlife-vehicle collisions and how they might be reduced

Frustrated residents of Sheridan, Wyoming, coalesced around the idea of secession, allying with nearby communities to petition for their own state.

Untold Stories of American History

How the Great Depression Fueled a Grassroots Movement to Create a New State Called Absaroka

In the 1930s, disillusioned farmers and ranchers fought to carve a 49th state out of northern Wyoming, southeastern Montana and western South Dakota

A 2009 hydrothermal explosion at Biscuit Basin, similar to the one that happened this week.

Watch a Yellowstone Hot Spring Explode Into a Boiling Column of Mud, Water and Rock

Hydrothermal explosions typically occur every year in the popular national park, but rarely in areas so heavily trafficked by visitors

A two-year-old adult female bison named Wyoming Hope gave birth to the 30-pound calf on May 16.

Rare White Bison Born in Wyoming State Park

The 30-pound calf is not albino but gets its pale fur from cattle genes

At American Fossil Quarry, on privately owned land near Kemmerer, Wyoming, hammer- and chisel-wielding visitors pay $69 to $89 to spend up to four hours hunting for fossils. Finders, keepers.

Evotourism ®

The 50-Million-Year-Old Treasures of Fossil Lake

In a forbidding Wyoming desert, scientists and fortune hunters search for the surprisingly intact remains of horses and other creatures that lived long ago