Scientists Design a Pollution-Hunting Robot

According to the Pacific Institute, more than 2 million tons of all kinds of waste are poured into the world’s waters every day. Scientists have gotten good at detecting it, but not so good at finding where it’s coming from. Swiss researchers are working on a solution to that problem: a swimming robot that can patrol waterways 24-7 and locate pollution at its source. VOA’s Kevin Enochs reports.

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