The Energy Information Administration says the U.S. got about 11 percent of its energy from renewable sources last year. Climate scientists say that's going to have to go up a lot to ward off the worst effects of climate change. The Department of Energy says the U.S. is one of the fastest growing markets for wind power in the world, but that's mostly been on land. Eric Loth, at the University of Virginia, is an engineer who's part of a team building the next generation of offshore wind turbines, inspired by a palm tree. (10/22/18)