Slimy green mats of toxic algae will again threaten the western shores of Lake Erie later this summer, according to an algae forecast released July 10.
Researchers have figured out a new way to predict which rivers are most at risk of dangerous flooding.
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.
It may be spring, but for the Great Lakes, particularly Lake Superior – it’s looking like winter more than ever.
Scientists are watching an iceberg bigger than the island of Guam as it slowly moves away from an Antarctic glacier.
A U.N.-commissioned panel says global climate change is hurting the growth of crops, affecting the quality of water supplies and forcing wildlife to change the way they live – but what if it’s all...
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...
No need to wait till Lake Superior freezes over again. Visit these caves any time for incredible photo ops.
It's an argument that's persisted for nearly four centuries: Where does the Amazon River begin?
It's as eerie as it is breathtaking and surprising: a waterfall in Antarctica that runs blood-red.