BThe study ran for nine years at Norway’s Smøla wind farm.

Something as simple as black paint could be the key to reducing the number of birds that are killed each year by wind turbines. According to a study conducted at a wind farm on the Norwegian archipelago of Smøla, changing the color of a single blade on a turbine from white to black resulted in a 70-percent drop in the number of bird deaths.

Wind power is surging right now, with more than 60GW of new generating capacity added worldwide in 2019. As long as you put the turbines in the right spot, wind power is reliably cheaper than burning fossil fuels. And most people would prefer to live next to a wind farm than any other kind of power plant—even solar …