Wyoming is a state in the Mountain West subregion of the Western United States. The 10th largest state by area, it is also the least populous and least densely populated state in the contiguous United States. It is bordered by Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho to the west, Utah to the southwest, and Colorado to the south. The state population was 576,851 at the 2020 United States census, making it the least populated U.S. state. The state capital and the most populous city is Cheyenne, which had an estimated population of 63,957 in 2018. Wyoming's western half is mostly covered by the ranges and rangelands of the Rocky Mountains, while the eastern half of the state is high-elevation prairie called the High Plains. It is drier and windier than the rest of the country, being split between semi-arid and continental climates with greater temperature extremes.

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Fossils of Jurassic Tuatara Relative Unearthed in Wyoming

13,000-Year-Old Red Ocher Quarry Found in Wyoming

Research confirms eastern Wyoming Paleoindian site as Americas' oldest mine

Bali-like temperatures in Wyoming? Fossils reveal tropically hot North America 95 million years ago

Earth’s first set of secondary impact craters discovered in Wyoming. Scientists are now seeking the giant primary impact crater responsible, which would be about 31 to 40 miles (50 to 80 km) wide and buried beneath some 280 million years worth of sediment.

Dinosaurs: Jurassic giants emerge from Wyoming badlands. Two giant sauropods offer a first glimpse of treasures likely to emerge from one of the world's most productive fossil sites.

Secondary Cratering Discovered on Earth: The Wyoming Impact Crater Field

Evidence of giant asteroid strike may be buried under Wyoming

Secondary cratering on Earth: The Wyoming impact crater field

Wyoming Remains Home To One Of The World’s Largest Northernmost Optical Telescopes

Wyoming woman catches rare pneumonic plague from cats

NASA is looking for proposals from educational institutions and nonprofit organizations to fly CubeSats through its CSLI program. They're particularly interested in proposals from Delaware, Mississippi, Nevada, North Carolina, Oklahoma, South Carolina, South Dakota and Wyoming.

Extinct 'Hobbit' Creature Found in Wyoming Emerged in The Wake of The Dinosaurs

Extinct 'Hobbit' creature the size of a house cat discovered in Wyoming dig site

Wyoming To Lead The Coal-To-Nuclear Transition

58-Million-Year-Old Mammal Footprints Found in Wyoming

Republicans' new favorite study trashes Biden's climate plans – but who's behind it? | Wyoming representative Liz Cheney says the study proves Biden’s policies would destroy state economies. But it has the oil and gas industry’s fingerprints all over it