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Water October 21, 2015

Unusual ice circle forms in North Dakota river

When George Loegering saw a large spinning circle of ice in the Sheyenne River while out hunting with relatives, the retired engineer couldn't believe his eyes.

Water October 21, 2015

Invasive earthworms harming Great Lakes forests

Gardeners and farmers may love earthworms for their rich castings and composting help, but in forests near the Great Lakes, the creatures are alien invaders.

Climate October 21, 2015

North pole now a lake

Instead of snow and ice whirling on the wind, a foot-deep aquamarine lake now sloshes around a webcam stationed at the North Pole. 

Biology October 21, 2015

Ancient microbes found in buried Antarctic lake

Beneath the icy surface of a buried Antarctic lake, in super-salty water devoid of light and oxygen that is also cold enough to freeze seawater, researchers have now discovered that a diverse community of bacteria has survived for millennia.

Oceans October 21, 2015

Cousteau lauds scientific research accomplished during 31-day underwater living experiment

Fabien Cousteau has a week left in his 31-day underwater living experiment in the Florida Keys, but he's not eager to return to the surface.

Science Education October 21, 2015

Ask a science teacher: What makes ice float?

Why is ice, which is water in solid form, lighter than water in its liquid form? Something must be happening to water when it freezes.

SCIENCE October 21, 2015

Bubbles from glacier ice turn up the noise in Alaska fjords

Glaciologist Erin Pettit began a research project to find out what humpback whales heard when a big piece of ice falls from a glacier and crashes into the ocean. But the sound generated by ice d...

DISASTERS October 21, 2015

California drought could doom endangered fish caught in the center of state's water battles

California's historic drought could wipe out a tiny, endangered fish that's played an outsized role in the state's water wars.

Spaceflight October 21, 2015

Early flood prediction gets a boost from space

Researchers have figured out a new way to predict which rivers are most at risk of dangerous flooding.

Climate October 21, 2015

Arctic Sea ice peak is 5th lowest on record, researchers say

Despite a late-season boost from the cold weather patterns similar to those that blasted England with terrific storms in February, Arctic sea ice is still on a long-term decline, according to the National Snow and Ice Data Center.

Water October 21, 2015

In Antarctica, a waterfall runs red

It's as eerie as it is breathtaking and surprising: a waterfall in Antarctica that runs blood-red.