Dams drove an Asian dolphin extinct. They could do the same in the Amazon

For decades it was the only freshwater dolphin species in the world not considered threatened by human activity. The tucuxi of the Amazon held out even as similar species in South America and Asia were dammed in, poisoned, or killed as bycatch; one is considered to have gone extinct. Now, the tucuxi (Sotalia fluviatilis) has […]

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