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Research conducted at Princeton University found less nitrogen pollution in the open ocean off the East Coast of the United States than previously estimated. The researchers evaluated nitrogen levels in the calcium carbonate skeleton of this living brain coral (Diploria labyrinthiformis). Photo courtesy of the researchers

130-year-old brain coral reveals encouraging news for open ocean

A 130-year-old brain coral has given the answer, in any event for the North Atlantic Ocean off the East Coast of the United States....