and the wind chill is 4 degrees. Li wants to get the Holy Grail of owl pictures: a snowy owl with its 5-foot wingspan flying in fresh snow. Li’s camera and camouflage-wrapped telephoto lens are ...

Noise from wind turbines limits where they can be built. But a design that mimics the shape of owl feathers can make wind farms quieter and help renewable energy grow faster. On a recent winter ...