July 30, 2021
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Novel hydrogels can safely remove graffiti from vandalized street art

Enlarge / A five-year-old boy with boxing gloves poses in front of a huge mural of himself in Denver, Colorado.Blaine Harrington III/Image Bank/Getty ImagesMention the word "graffiti," and many people's thoughts immediately turn to vandalism in the form of defacement of property. But there is also graffiti that rises above such negative connotation...