Herring hit a dam wall

Herring hit a dam wall

Each spring, river herring migrate to rivers and ponds of their birth and for hundreds of years, they have been pushed back by dams and ancient impoundments. Volunteers move them around some but nature's clock is ticking. Offshore, wind farm turbines are being constructed quickly so we show you a virtual tour of navigating through one hundred proposed turbines east of Block Island.

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