Finished the Moon Puzzle? Bored out of your head and need a new challenge? The fascinating Earth Puzzle celebrates the 50th anniversary of Earth Day, the worlds largest environmental movement that aims to bring awareness to the critical issues facing our planet. The 1000 piece circular puzzle is a test of everyones ability to assemble a picture of the globe as taken from above. The image, courtesy of NASA, is one of the clearest images of the Earth to date, and features features a portion of the Western Hemisphere and the Pacific Ocean in incredible detail, and stunning clarity.