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Sign from April 2017 March for Science. Photos possibly from Caltech, but I’m not certain. It was a Caltech prof, Clair Patterson (?), who spearheaded the cleanup.
April 7, 2025 at 1:49 PM
Sign from April 2017 March for Science. Photos possibly from Caltech, but I’m not certain. It was a Caltech prof, Clair Patterson (?), who spearheaded the cleanup.