In the tropics, the border between troposphere and stratosphere—the tropopause—sits at around 20km, far above any normal ...

A prescient new book outlines the future of warfare in the far north, and just how far behind its rivals the US still is.

In 2006, scientists released the first version of the Arctic Report Card, now a staple at the Fall Meeting of the American ...

The Arctic has no clear definition, Mr Rosen writes. Some define it as anything above the Arctic Circle. Others see it as where the semi-arid grassland of the steppe turns into frigid tundra, with a ...

The Arctic is no longer a frozen periphery, especially not after the U.S. spat with Europe over Greenland. As sea ice melts, the High North is emerging as a strategic hub for energy, shipping and ...

Erin is a co-host of "The 4" on WCCO and a two-time Emmy Award-winning reporter passionate about experiential storytelling and taking viewers on an adventure - be it inside a bear den, at the bottom ...

Foreboding environmental milestones abounded again this year in the Arctic, where experts say dramatic climate shifts are fundamentally altering the ecosystem and how it operates. One recent turning ...

In 2006, when the US National Oceanic and Atmospheric Administration, or NOAA, released the first-ever Arctic Report Card, scientists already knew the top of the world was in trouble. It’s now much ...

The Arctic is rapidly changing from the climate crisis, with no "new normal," scientists warn. Wildfires and permafrost thaw are making the tundra emit more carbon than it absorbs. From beaver ...

During World War II, the U.S. got a taste of what a war in the Arctic could look like. In the Battle of Attu, the Japanese army took the Aleutian island of Attu in Alaska and the 7th Infantry Division ...

Canadian Prime Minister Mark Carney’s recent visit to Iqaluit in Canada’s High North, supposedly about Arctic security, was nothing more than a carefully staged photo-op. Carney has spent his career ...

NPR's Leila Fadel speaks with Axios senior climate reporter Andrew Freedman about the incoming Arctic blast that's expected to bring dangerously cold temperatures to large parts of the U.S. That's ...