Explorers happen upon the first glowing sea turtle ever recorded.

Roads washed out. People trapped in cars. Seven deaths as of Sunday evening. And it's still raining, but the rain should taper off by Monday night.

Despite climate change, sea ice will continue to make the Northwest Passage too treacherous to be a regular Arctic shipping route for decades, says study.

U.S. landfall looks increasingly unlikely. "Historical" flooding possible in parts of the U.S. Southeast and Mid-Atlantic.

Fossilized shells and bones uncovered at two sites in Colombia. Scientists date this ancient sea turtle's remains at 120 million years old.

A satellite view from Monday shows wildfires still burning in Oregon, Idaho, and Montana. The fires started in August.

Sunday's supermoon, combined with an 18.6-year lunar cycle, caused high tides on both sides of the Atlantic this week. There were many flood warnings and alerts in effect in the UK on Tuesday night. In eastern North America, Tropical Storm Joaquin might combine with high tides to cause flooding.

Scientists are studying the increasingly fast rate of summertime ice melt in Greenland. See a new NASA video, plus illustrations of the 2015 melt season.

Hadrosaur was a truly polar dinosaur that endured months of winter darkness and probably experienced snow.

An initial draft, a collaborative effort from scientists at 11 institutions, of a new, comprehensive evolutionary tree of life. Plus ...