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The world’s oceans provide a carbon sink that has so far kept humanity from feeling the full impact of escalating atmospheric CO. According to analyses of our best current data sets, the seas absorb and store one out of every four carbon molecules spewed into the atmosphere by humanity, making the ocean a vital hedge against catastrophic climate change. But as the planet heats up, forecasts do not agree on how much carbon the oceans will continue to store. Increasingly intense ocean winds are stirring up carbon-rich waters from the deep seas, adding more carbon back into the atmosphere than ex…