How in the world can the supposed scientist know that the Atlantic Ocean circulation is at it's weakest level for the past 1,600 yrs? Alarming Eh!
The world is flat until Columbus came along .... No?
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It to do with the Ice caps melting in the Arctic and changing the density of the salt water in North Atlantic. This is caused by flooding more fresh water in to the salt water mix which in turn slows down the salt from sinking. This has he effect of reducing the Gulf Stream conveyor belt system in the western Europe Airflow.