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10 things TreeHuggers will love at the World’s fair

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10 things TreeHuggers will love at the World’s fair
credit: Margaret Badore

Photovoltaic trees

Eleven of the pavilions make use of solar voltaic panels, including this cutting-edge technology at the German pavilion. These solar trees both provide shade and collect energy from the sun during the day using organic photovoltaic technology. At night, the stored energy is used to power LEDs on the trees, providing light for the exhibit after dark. The solar trees use a closed circuit, and thus power themselves.

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