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Nature Geoscience 1, 576–578 (1 September 2008) | doi:10.1038/ngeo287

Palaeoceanography: Bloom without fertilizer

Mitchell Lyle

Atmospheric carbon dioxide concentrations have risen for the past 250 years as humans have dug up and burned biogenic carbon that had once been stored as coal, petroleum and natural gas in rocks and sediments. Over geologic timescales, this carbon will eventually be buried again in deltaic and marine sediments.