This Dam Simple Trick Is a Big Green Energy Win

This Dam Simple Trick Is a Big Green Energy Win

There is even more potential out there: A 2016 US Department of Energy report found that an additional 4.8 gigawatts of electricity could be generated by retrofitting non-powered dams over the next three decades.

Dead Drift: Adding Salmon Carcasses to Streams

Dead Drift: Adding Salmon Carcasses to Streams

Denny lays the lifeless fish in the stream steps back and watches the dead drift toward a log jam.Fish biologist Lytle Denny plants salmon carcasses.Denny watches flies feed on the dead fish he just planted.