Ocean circulation implicated in past abrupt climate changes

ENN
Jun 30, 2016, 5:25 pm23 pts
There was a period during the last ice age when temperatures in the Northern Hemisphere went on a rollercoaster ride, plummeting and then rising again every 1,500 years or so. Those abrupt climate changes wreaked havoc on ecosystems, but their cause has been something of a mystery. New evidence published this…

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