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Seawater can be purified on demand using this solar-powered, portable device.

As of 2017, there were 785 million people around the world who didn't have access to clean water. Researchers at the Massachusetts Institute of Technology have made a portable device that can remove salt from water. The device uses solar energy to create an electric field that pushes away charged particles like salt, bacteria, and viruses. It can purify water anywhere, at any time.

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