Dirt, ice, and greenery can all conceal hidden or forgotten cities. Here are five cities that were rediscovered through ...

Explore Justin Trudeau's resignation as Canada's prime minister and its impact on the Liberal Party and upcoming elections.

US President-elect Donald Trump says owning the Arctic island is vital for national security, but experts say he may also be ...

President-Elect Donald Trump is weighing an executive order that seeks to protect gas-powered appliances including stoves and ...

President-elect Donald Trump has argued that the U.S. should buy Greenland since his first term in the White House. The island, with 56,000 inhabitants, is an autonomous territory of Denmark, and both ...

President-elect hopes to stop release of dossier covering classified documents and election interference investigations and dreams of making legacy acquisition after Congress certifies election win ...

The Greenland Ice Sheet is a crucial bellwether for monitoring climate change. It holds around 8% of the planet's freshwater ...

In the Arctic, the old, multiyear ice is increasingly melting, dramatically reducing the frequency and size of pressure ridges. These ridges are created when ice floes press against each other and ...

Zavaritskii volcano in the Kuril Islands — a former Soviet nuclear submarine base — was responsible for the mysterious 1831 volcanic eruption that cooled the climate and turned the sun different ...

Deep sediments under Arctic lakes could release large amounts of carbon dioxide and methane, adding to the threat of runaway ...

In the Arctic, the old, multiyear ice is increasingly melting, dramatically reducing the frequency and size of pressure ridges. These ridges are ...

Arctic sea ice is undergoing profound changes, with older, rugged ice diminishing and younger, smoother ice becoming more ...