Alaska is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., it borders the Canadian province of British Columbia and the territory of Yukon to the east and has a maritime border with Russia's Chukotka Autonomous Okrug to the west, just across the Bering Strait. To the north are the Chukchi and Beaufort seas of the Arctic Ocean, while the Pacific Ocean lies to the south and southwest. Alaska is by far the largest U.S. state by area, comprising more total area than the next three largest states combined. It represents the seventh largest subnational division in the world. It is the third-least populous and the most sparsely populated state, but by far the continent's most populous territory located mostly north of the 60th parallel, with a population of 736,081 as of 2020—more than quadruple the combined populations of Northern Canada and Greenland.

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Riot of Color: The Fiery Hues of Alaska’s Malaspina Glacier

Southern Alaska's Forest (Tongass & Chugach National Forests) Landscape Integrity, Habitat, and Carbon Are Critical for Meeting Climate and Conservation Goals

Why NASA Just Fired A Rocket At The Northern Lights In Alaska

Southern Alaska's national forests key to meeting climate, conservation goals

NASA Flights Link Methane Plumes to Tundra Fires in Western Alaska

NASA Flights Link Methane Plumes to Tundra Fires in Western Alaska

Researchers observe wolves hunting and killing sea otters and harbor seals on Alaska's Katmai coast

Fiery Tundras and Plump Bears: Autumn’s Majesty on Alaska’s Kodiak Island

Flooding that closed Alaska's Dalton Highway also caused widespread ground sinking

Fat Bear Week: How Alaska's brown bears nearly double in size

Unidentified Golden, Dome-Shaped Object Found in Gulf of Alaska is ‘Biological in Origin’

Study links epigenetic changes to historic trauma in Alaska Native communities

How to Track a Songbird from Alaska to Peru

Giant Set of Dinosaur Tracks in Alaska Is So Big It's Called 'The Coliseum'

The Shrinking Giant: A 40-Year Look at Alaska’s Mendenhall Glacier

‘Folks in Alaska should take this seriously.’ Anchorage not safe from tsunamis, study finds

Paleontologists Discover Largest Known Dinosaur Track Site in Alaska

Nearly a third of coastal wolves in Alaska are eating sea otters

Alaska’s Shishaldin Volcano Erupts – Massive Explosion Sends Ash Cloud Over 6 Miles High

Research reveals sources of CO2 from Aleutian-Alaska Arc volcanoes