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A three-week-old coral polyp (left), and its delicate skeleton (right), demonstrate how corals respond to increasing ocean acidification, which can impair their ability to build their calcium carbonate skeletons
© Elizabeth Drenkard / Woods Hole Oceanographic Institution
The ocean has a serious case of heartburn - Is relief on the way?
The Earth's atmosphere contains more CO2 than at any time in last 20 million years, researchers say. The levels would be even higher if it weren't for the ocean, which slurps up carbon emissions and stores roughly 60 times more carbon than the atmosphere.