States Achieve 25 Percent Renewable Energy With Wind Power

Defying conventional wisdom about the limits of wind power, in 2012 both Iowa and South Dakota generated close to one quarter of their electricity from wind farms. Wind power accounted for at least 10 percent of electricity generation in seven other states. Across the United States, wind power continues to strengthen its case as a serious energy source.

Human Powered Generators: Cheap and Easy Renewable Energy

Human-powered generators cleverly derive electricity from something we already use in abundance — human movement — offering an easy way to tap renewable energy for anyone interested in a low-impact lifestyle. Two creative generators caught our attention: a merry-go-round that supplies light for poor Ghanaian schools and a revolving door that lights up a train station.