Flexible fabric harvests electricity from subway tunnels

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The United Nations estimates that, by 2050, two thirds of the world’s population will live in cities. As a result of this growing population, the demand for energy will increase dramatically. We have already seen several innovative approaches to this problem, such as using empty mine shafts to help generate electricity and fish-friendly hydropower. Now, British start-up Moya Power has come up with a novel approach – using the wind in train tunnels to generate electricity. Moya Power uses piezo-electric textiles – fabrics that generate electricity in response to movement or pressure. These textiles have slivers of bendable filaments embedded…

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