Taking Down Dams and Letting the Fish Flow On the Penobscot in Maine and other rivers in the U.S., several endangered species are rebounding with the reopening of spawning areas. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Northern Lights: In case you missed - How to see them again online hereSolar Storm WARNING: ‘Power grid disruptions’ expected TODAY sparking tech blackout fearsHow We Pollute the Air Every Morning (Before We Hop in the Car)NASA space walk WATCH LIVE: Astronauts venture out of ISS – LIVE WEBCAMTwo Swiss Athletes Are First at Olympics Confirmed With NorovirusNorthern Lights UK: Is the breathtaking Aurora Borealis still visible TONIGHT?