The runoff of fresh water from melting glaciers into the North Atlantic could alter the climate of North America and Europe, according to experts. Global warming has substantially increased the amount of fresh water running into the northern Atlantic Ocean over the past few decades, a change that also affects global ocean currents. This radio broadcast explains how freshwater runoff is already affecting ocean circulation, that the Gulf Stream ocean conveyor belt could shut down and stop transporting heat northward, and that the results could cause Western Europe to freeze while the rest of the world warms. The clip is 4 minutes and 33 seconds in length.