Ocean currents are slowing down, and that’s bad news

Two recent articles in the journal Nature reached the same disconcerting conclusion: One of the planet’s main ocean-current systems is slowing down, which will have large effects on the global climate.

Both studies focus on the Atlantic meridional overturning circulation, or AMOC, a system of ocean currents in the Atlantic, which influences weather patterns in Europe, North America and parts of Africa. The AMOC is like a conveyor belt, bringing warm water from the tropics to the north, while transporting cold water back to the South through the deep ocean.

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