Waves constantly thrash the fishing village of Mutriku on Spain's northern coast. Records from the 13th century describe the dangerous surf and shipwrecks here. Until recently, water occasionally hurled debris through windows of homes, before the local government built a cement breakwater to shelter the harbor.
Wind and solar get lots of attention, but another kind of renewable power actually creates more energy in our country --wood. The state of Massachusetts on Friday decided that these plants aren't green enough to get some special breaks.
PBS NewsHour continues their energy series with a visit to Colorado. Coal has been a traditional source of electrical energy in the state, but now a new energy source - natural gas - is making inroads.
Indonesia, the country with the world's largest number of active volcanoes, is betting that all the hot rocks will provide a clean and reliable energy source for the future.
The country is believed have 40 percent of the world's geothermal energy resources. But making geothermal energy economically feasible will require adjusting the country's heavily subsidized energy prices. And that issue is a political hot potato.