Tagged seals help find missing piece in global climate puzzle

http://www.nature.com/news/tagged-seals-help-find-missing-piece-in-global-climate-puzzle-1.12488
By tracking the voyages of elephant seals off Antarctica, and with the help of satellite imaging and undersea sensors, researchers have discovered a long-elusive source for the deep-ocean streams of cold water that help to regulate the Earth's climate.