NPR

Unless you've been living off the grid, you've probably heard about President Obama's "all of the above" plan for America's energy future, which embraces everything from oil drilling and natural gas fracking to wind, solar, and even pond scum. In the last couple years the Obama administration has pumped billions into cutting-edge clean energy tech. But these all share a common problem: plugging into an electric grid that is mostly unchanged since the 1930s. Energy experts say meeting our carbon-footprint...