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You won't find Don Quixote fighting these windmills -- Argentina is using them to power a modern building. This clean wind energy replaces a good percentage of thermal energy—the kind that causes greenhouse gas emissions. The windmill technology in these eco-sonscious buildings not only uses less energy, but even saves energy for future use, on non-windy days.

Want to find out more? Go to Argentinia Unveils wind-powered building at Ecofriend.

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