"Climate change is expected to drop water levels in the Great Lakes, experts said Wednesday. Levels could drop anywhere from a few inches to several feet as water evaporates in the drought conditions."

"The floodwaters are swelling, but the resources needed to confront them are shriveling up. That's the frustrating reality that state dam officials face as they confront added stress to the thousands of structures they regulate."

"A report out this month found that humans might be to blame for most large whale deaths over the past 40 years in the northwest Atlantic Ocean, with entanglement in fishing gear the No. 1 killer."

"As carbon dioxide continues to build up in the atmosphere as a result of burning fossil fuels, the seas absorb much of it.The full effects have yet to be felt."

"CHARLESTON, W.Va. -- State regulators in West Virginia have ordered Argus Energy to repair a water treatment system at a Lincoln County mine site after a blackwater spill killed fish."

"Getting a suction tag onto a 5-ton orca can be tricky, but the scientific rewards are big. Scientists are using the devices to gather underwater data about orca behavior to find out how vessel traffic might be affecting the endangered whales."

"HOMER, Alaska -- Kris Holderied, who directs the National Oceanic and Atmospheric Administration's Kasitsna Bay Laboratory, says the ocean's increasing acidity is 'the reason fishermen stop me in the grocery store.'"