An anonymous reader writes: Brazilian designers Martina Pagura and Pedro Nakazato Andrade have created an oxygen-filtering breathing device that removes carbon dioxide from the air, stores it in a battery-like device, and then converts it into electricity for later use. Dubbed the W/Air, the mask pumps in fresh oxygen while distilling carbon dioxide from respiration and the environment. It is capable of producing enough energy to power a cellphone or portable music player.
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