Sept 29 (Reuters) - Scientists were baffled when a band of seaweed longer than the entire Brazilian coastline sprouted in 2011 in the tropical Atlantic - an area typically lacking nutrients that would feed such growth.
A group of U.S. researchers has fingered a prime suspect: human sewage and agricultural runoff carried by rivers to the ocean.
The science is not yet definitive. This nutrient-charged outflow is just one of several likely culprits fueling an explosion of seaweed in warm waters of the Americas. Six scientists told Reuters they suspect a complex mix of climate . . .
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