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us green spaces, Tag
- Squirrels Were Introduced to U.S. Parks to “Maintain People’s Health and Sanity” Tue, 17 Dec 13, 8:00am"SQUIRREL!" Have you ever wondered why parks and other urban green spaces are filled with squirrels? Well, Etienne Benson, an assistant professor in Penn’s Department of History and Sociology of Science, believes that their...