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Current warming sharpest climate change in 5,000 years

Research on Arctic and North Atlantic ecosystems shows the recent warming trend counts as the most dramatic climate change since the onset of human civilization 5,000 years ago, according to studies published Thursday. Researchers studied the increased introduction of fresh water from glacial melt, oceanic circulation, and the change in geographic range migration of oceanic plant and animal species. The team described "major ecosystem reorganization" - or "regime shift" - in the North Atlantic, a consequence of global warming on the largest scale in five millennia. "The rate of warming we are seeing (now) is UNPRECEDENTED in human history." They have found "extensive" shifts in the geographic range of numerous plant and animal species. Image Above: This NASA image received in February 2006 shows the calving front, or break-off point into the ocean, of Helheim Glacier

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