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Woman harvesting pumpkins an a field in southern England, in October. Pumpkins, like other squash, are thought to have originated in North America. The oldest evidence, pumpkin-related seeds dating between 7000 and 5500 BC, was found in Mexico. Pumpkins are widely grown for commercial use and are used both in food for puree and pumpkin pie fillings, and recreation. (KEYSTONE/SCIENCE PHOTO LIBRARY/DAVID PARKER/SCIENCE PHOTO LIBRARY)