Yellowstone National Park trail shut down after first bear attack in 4 years
Grizzly bears and black bears coexist in Yellowstone, according to the National Park Service, and it's unclear which one was involved in the attack.
Bat colony found in Grand Teton lodge, possibly exposing hundreds to rabies
Hundreds of people could potentially have been exposed to rabies during their summer vacation at Grand Teton National Park.
Bison boils to death in Yellowstone hot spring
A bison was being photographed wandering around the hot spring’s edge when it reportedly stumbled into the scalding water and couldn’t get out.
Yellowstone tourist gored after approaching bison, rangers say
It's the second time a person has been injured by a bison in Yellowstone National Park this year.
Yellowstone visitor suffers thermal burns after falling into scalding water
A 60-year-old woman from New Hampshire suffered severe thermal burns after falling into scalding water near Yellowstone's Old Faithful geyser.
Watch: Yellowstone’s Biscuit Basin explosion sends debris skyward
A "localized hydrothermal explosion" sent debris and steam skyward, prompting visitors to run away to safety.
Bison gores 83-year-old woman in Yellowstone National Park
An 83-year-old woman was gored and seriously injured by a bison in Yellowstone National Park.
Veteran survives horrifying bear attack while hiking in popular national park
A disabled veteran who survived an attack by a grizzly bear is sharing the moment when his instincts kicked in and how it helped him survive.
Watch: Intoxicated driver swerves across lanes, towing tireless trailer in wild Wyoming chase
In a bizarre incident on December 28, a Wyoming highway patrol chase unfolded as a driver, suspected to be under the influence of alcohol, swerved recklessly across lanes.
Pierce Brosnan heading to court after 'violating closures' at Yellowstone National Park
Yellowstone National Park gave Pierce Brosnan two citations.
Yellowstone National Park finds 1st case of fatal brain disease after deer carcass tests positive
Yellowstone National Park has confirmed its first case of chronic wasting disease (CWD) on Tuesday after a deer carcass in the park tested positive for the highly contagious and fatal brain disease
Climber falls to his death at Grand Teton National Park
Authorities said the victim fell between 40 and 50 feet.
Phoenix woman gored by bison at Yellowstone National Park
A bison gored and significantly injured an Arizona woman in Yellowstone National Park.
Rangers seek pair accused of 'harassing' bison calf in Grand Teton National Park
National Park Service rangers have opened an investigation into two individuals who are accused of "harassing" a bison calf in Grand Teton National Park on Sunday afternoon.
Watch: Large bison herd escorts calves across road in Yellowstone
The reddish-brown calves are born in late April and May and can keep up with the herd 2 to 3 hours after birth, according to the National Park Service.
'Leave it alone': Yellowstone issues warning after tourists place baby elk in car, drive to police station
Park rangers said over the Memorial Day weekend, visitors placed a newborn elk into their car and drove it to the local police station.
Visitor seen taking selfie dangerously close to bison in Yellowstone National Park
Another visitor to the park recorded the woman taking a selfie while standing right next to a huge bison that was lying down on the grass on May 20.
Rare white bison born at Wyoming state park
The park has seen an uptick in visitors hoping to get a glance of the cute calf.
Officials investigate mysterious disappearance of 30-ton shipment of explosive chemicals in California
Ammonium nitrate was used in 1995 at an attack on the Murrah Federal Building in Oklahoma City. The explosion killed 168 people and injured approximately 850.
Yellowstone National Park officials say man disturbed baby bison, resulting in its death
The incident occurred on the evening of May 20 in the park's northeastern corner in Wyoming.