Jan 6 - By Associated Press
A miserable year for the economy didn't prevent a record number of people from visiting Yellowstone National Park in 2009.
Dec 22 - By Matthew Brown, Associated Press Writer
An effort to divert some Yellowstone National Park bison from government-sponsored slaughter is in limbo after the program's permit expired and criticism emerged over moving some of the animals onto Ted Turner's private ranch.
Dec 22 - By Associated Press
The East Entrance to Yellowstone National Park is now open after crews used a howitzer in recent days to trigger avalanches on Sylvan Pass.

Dec 2 - By Matthew Brown, Associated Press Writer
The head of Montana's wildlife agency has given preliminary approval to a plan calling for 74 bison from Yellowstone National Park to go to billionaire Ted Turner's private ranch.
Nov 30 - By Associated Press
Park officials say a new comprehensive plan for development in a north-central region of Yellowstone National Park has been adopted.
Nov 20 - By Ben Neary, Associated Press Writer
The state of Wyoming filed a federal lawsuit Friday seeking to block the National Park Service from further restricting snowmobile numbers in Yellowstone National Park.
Nov 10 - By Matthew Brown, Associated Press Writer
Dozens of wild bison from Yellowstone National Park would be relocated to a Montana ranch owned by billionaire Ted Turner, under a recommendation made by state and federal officials Tuesday.
Nov 9 - By Matthew Brown, Associated Press Writer
A coalition of environmental and American Indian groups sued two federal agencies Monday to stop the mass slaughter of bison that migrate outside Yellowstone National Park in search of food.
Nov 4 - By Mike Stark, Associated Press Writer
Scientists searching for Yellowstone National Park's lesser-known life forms — beyond its famed bison, bears and wolves — found more than 1,200 species, including several never known before to exist in the park.
Oct 15 - By Ben Neary, Associated Press Writer
The National Park Service has approved a plan to restrict snowmobile numbers in Yellowstone National Park to less than half of last winter's limit.
Oct 12 - By Matthew Brown, Associated Press Writer
Montana wildlife commissioners shut down gray wolf hunting Tuesday in backcountry adjacent to Yellowstone National Park after nine of the predators were killed there in recent weeks.
Sep 25 - By Ben Neary, Associated Press Writer
The state of Wyoming has asked a federal appeals court to give a judge authority to block a proposal reducing the number of snowmobiles allowed in Yellowstone National Park.
Sep 17 - By Associated Press
A judge in Wyoming says he has no authority to block a federal plan to reduce snowmobile traffic in Yellowstone National Park this winter.
Sep 4 - By Associated Press
A lightning-caused fire in Yellowstone National Park had grown to about 110 acres.
Aug 18 - By Mike Stark, Associated Press Writer
Twenty-nine species in more than 20 states — from a rare beach-dwelling plant in Yellowstone National Park to a caddis fly in Nebraska — may need federal protections to avoid extinction, according to the U.S. Fish and Wildlife Service.
Aug 5 - By Rebecca Boone, Associated Press Writer
An environmental group promises to appeal a federal ruling that on Tuesday approved the expansion of a phosphate mine into a roadless area near Yellowstone National Park.
Aug 5 - By Associated Press
Yellowstone National Park officials are crediting relatively low gas prices and the park's affordability after an all-time record number of people visited in July.
Jul 23 - By Matthew Brown, Associated Press Writer
The state of Wyoming on Friday asked a federal judge to force Yellowstone National Park to allow up to 740 snowmobiles daily during winter — more than twice what the Obama administration wants.
Jun 17 - By Matthew Brown, Associated Press Writer
Four bull bison that migrated out of Yellowstone National Park were killed by state livestock agents Wednesday — the first the government has killed this year under a contentious policy to contain disease.
Jun 17 - By Associated Press
Officials in Yellowstone National Park are searching for a man they believe committed suicide by jumping into a river and going over a 300-foot waterfall.

Jun 12 - By Dirk Lammers, Associated Press Writer
Ralph Deangelis planned his family's cross-country RV excursion around taking in great sights at Mount Rushmore, Yellowstone National Park and the Grand Canyon. But Deangelis also likes being able to see practical things like local TV weather reports while they're on the road.
May 14 - By Bob Moen, Associated Press Writer
Two seasonal Yellowstone National Park concession workers have been fired after a live webcam caught them urinating into the Old Faithful geyser.

Apr 20 - By Matthew Brown, Associated Press Writer
Hunters are killing grizzly bears in record numbers around Yellowstone National Park and researchers say the once-endangered predator is expanding across the region.
Jan 2 - By Associated Press
More earthquakes are rattling Yellowstone National Park.
Dec 29 - By Mead Gruver, Associated Press Writer
Yellowstone National Park was jostled by a host of small earthquakes for a third straight day Monday, and scientists watched closely to see whether the more than 250 tremors were a sign of something bigger to come. Swarms of small earthquakes happen frequently in Yellowstone, but it's very unusual for so many earthquakes to happen over several days, said Robert Smith, a professor of geophysics at the University of Utah.