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Researchers at the Southwest Research Institute in San Antonio, Texas are apparently huge fans of The Ghostbusters. A recent patent filed by them shows a tank of goo carried backpack-like by riot police.

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A hose extends from the tank to a nozzle, which when shot, combines a jet of water with a jet of dry powder into a single powerful stream of splurge that causes everybody in the area to fall down. Even cars are not immune as they go sliding faster than a Japanese drifter.

Any invention that calls for less bean bags shot to our face is a good one in our book.

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Riot slimer [NewScientist]