Study finds big savings in removing dams over repairs

A new study by Portland State University researchers finds billions of dollars could be saved if the nation's aging dams are removed rather than repaired, but also suggests that better data and analysis is needed on the factors ...

All-electric battery-powered ferry to turn sea travel green

A novel fully electrified car and passenger ferry will help efforts to decarbonise maritime transport. It will also overcome limitations in distances for such boats by targeting medium-range connections.

Selfies—why we love (and hate) them

At some point, when I was writing my new book, 'Selfies, why we love (and hate) them,' I walked around the Katrinebjerg halls at Aarhus University, Denmark, and asked people if they'd play a word association game with me.

AI software assists design of new material for solar cells

Solar cells will play a key role in shifting to a renewable economy. Organic photovoltaics (OPVs) are a promising class of solar cells, based on a light-absorbing organic molecule combined with a semiconducting polymer.

New map shows many old-growth forests remain in Europe

Though you might read about deep, dark woods in fairy tales, the prevailing story today is that very little European old-growth forest remains. But now a new study—and map—shows that a surprising number of these primary ...

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