What does civic frustration look like when combined with technical know-how? In Philadelphia, it has resulted in a sort of guerrilla network of solar-powered e-paper signs showing how often buses ...

An international research team has used data on Beijing’s public transit system to explore if bus depots could host solar installations and energy storage facilities to help reduce the load on the ...

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He was an idea man and his concepts were cutting-edge: solar-powered bus stops, solar-powered billboards, solar-powered irrigation. "Bill had a true interest in the environment and he was in love with ...