President Obama and the EPA recently took historic action to limit greenhouse gas emissions from the nation's coal-fired power plants. While the conventional wisdom (and much of the reporting) on this noteworthy advance for environmental protection has focused on air quality and global climate change, the ruling was cause for considerable cheer among ocean conservationists.

This week marine experts, lawmakers, policy leaders and others came together in the nation's capital for the Our Ocean conference hosted by Secretary of State John Kerry. On the occasion of this important gathering, it is helpful to remember that the rise in atmospheric carbon has already set off a wide range of cascading impacts through the degradation and alteration of the world's oceans - whether from rising seas, increased water temperatures, acidification, or the growing number and severity of storm events.

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