The Arctic Ocean, once locked in a vault of thick, old ice, now is transforming at lightspeed. Temperatures there are increasing at up to four times the rate of the planet overall, melting sea ice ...

Beneath the frozen surface, a number of fish species have adapted to survive in these harsh conditions. From icy seas to deep ...

Add Yahoo as a preferred source to see more of our stories on Google. The author's view walking across Arctic sea ice off Utqiagvik, Alaska, in April 2025. Alexandra Jahn As I walked out onto the ...

Melting Arctic ice is revealing a hidden world of nitrogen-fixing bacteria beneath the surface. These microbes, not the usual cyanobacteria, enrich the ocean with nitrogen, fueling algae growth that ...

The shrinking sea ice in the Arctic Ocean is, overall, a disaster. But paradoxically, the melting of the ice can also fuel the engine of the Arctic food chains: algae. Algae are the main food source ...

The polar region is the area around the North Pole and the South Pole. The Arctic in the north and Antarctica in the south. These are the Earth's coldest regions characterised by vast ice sheets.

I walked out onto the frozen Arctic water off Utqiagvik, Alaska, for the first time, I was mesmerized by the icescape. Piles of blue and white sea-ice rubble several feet high gave way to flat areas ...