AppAdvice EXTRA: Earth Day Apps by Robin Rhys April 20, 2011 It's Earth Week! Check out five apps that will have you going green! Mentioned apps Free iRecycle Earth911.com Free TreeHugger TreeHugger.com $0.99 Gardening Jeff Hale $0.99 EcoCharge Cocoa Platypus $4.99 National Park Maps HD National Geographic Society