Clues emerge in 'missing' ocean plastics conundrum

It's a puzzle that has perplexed scientists for years: humanity dumps millions of tonnes of plastics into the world's oceans annually, yet only a tiny fraction remains visible on the surface.

Pace of Bering Sea changes startles scientists

The Yupik Eskimo village of Kotlik on Alaska's northwest coast relies on a cold, hard blanket of sea ice to protect homes from vicious winter Bering Sea storms.

Alaska bakes under heat wave linked to climate change

Alaska residents accustomed to subzero temperatures are experiencing a heat wave of sorts that is shattering records, with the thermometer jumping to more than 30 degrees Fahrenheit (16.7 Celsius) above normal in some regions.

Siren sounds on nuclear fallout embedded in melting glaciers

Radioactive fallout from nuclear meltdowns and weapons testing is nestled in glaciers across the world, scientists said Wednesday, warning of a potentially hazardous time bomb as rising temperatures melt the icy residue.

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