The Atlantic Ocean, especially the North Atlantic, is peculiar: Every few decades, the average temperature of surface water there changes dramatically.
Scientists want to know why that is, especially because these temperature shifts affect the weather. New research suggests that human activity is part of the cause.
Scientists originally thought that maybe some mysterious pattern in deep-ocean currents, such as an invisible hand stirring a giant bathtub, created this temperature see-saw.
Original article, “Pollution Playing A Major Role In Sea Temperatures,” by Christopher Joyce and posted on NPR April 4, 2012.