Nitrogen contained in coral provides evidence of human impact on the open ocean

New evidence suggests that a nutrient that is both essential to life and an environmental scourge when present in large quantities is increasing in the open ocean, according to a new study published May 19 in the journal Science. The increase of this nutrient, known as "fixed" nitrogen, was studied in coral. The findings give researchers new insight into ocean ecosystems, which in turn provides a greater understanding for scientists and policymakers on how they should prioritize human-made threats to Earth's biosphere and climate.

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