It is the dawn of the super crab.

Crabs are bulking up on carbon pollution that pours out of power plants, factories and vehicles and settles in the oceans, turning the tough crustaceans into fearsome predators.

That presents a major problem for the Chesapeake Bay, where crabs eat oysters. In a life-isn't-fair twist, the same carbon that crabs absorb to grow bigger stymies the development of oysters.

"Higher levels of carbon in the ocean are causing oysters to grow slower, and their predators — such as blue crabs — to grow faster," Justin Baker Ries, a marine geologist at the University of North Carolina's Aquarium Research Center, said in an recent interview.

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