Nancy's Earth Day project turns into chimpanzee chaos in the nineteenth book in the interactive Nancy Drew Clue Book mystery series. Nancy, Bess, and George need to create an Earth Day project for school, and they've landed on the perfect idea: Chimpi atas These globe-shaped pi atas are enrichment toys made for the chimpanzees at the Hairy Hideaway animal sanctuary to enjoy. The girls have filled them with the chimps' favorite healthy...