November 30, 2005 New research suggests something's happening to the so-called "conveyer belt" in the Atlantic Ocean -- the huge circulation system that takes warm waters from the south Atlantic and dumps them off the coast of Europe, keeping northern Europe relatively warm. Some believe global warming may be affecting this heat engine, but others are skeptical, given how complex the ocean can be. The debate is part of a larger effort by scientists to detect climate changes with sketchy data.
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