Progress Watch Clean energy: How the world is cleaning up its act (+video)

Last year, new global capacity of hydroelectricity, wind, solar, and other renewable power grew more than in any previous year. Clean energy faces daunting obstacles, but the progress on energy and climate to date is notable and likely to continue.

By , Staff Writer

Carlos Barria/Reuters

The clean-energy world of the future is still a long way off, but it is arriving faster than ever before.