Scientists are monitoring a massive pool of fresh water in the Arctic Ocean that could spill into the Atlantic and potentially alter the key ocean currents that give Western Europe its moderate climate.Full story
Changing levels of freshwater from the Arctic can dramatically alter ocean currents, and potentially our climate, researchers have found. NBC's Anne Thompson reports.
Dolphins in the western Indian Ocean stick with their own kind — not that they can help it. Blame the ocean's currents, a new study suggests. Full story