The hilarious Crayons are back in this celebration of our planet and their contributions to it - white ice caps, green trees, blue oceans and skies, brown soil and even wheat!

Having offended her superiors by winning a battle without permission, Caroline Sula has been posted to the planet Earth, a dismal backwater where careers go to die. But Sula has always been fascinated by Earth history, and she plans to reward herself with a long, happy vacation amid the ancient monuments of humanity's home world. Sula may be an Earth history buff, but there are aspects of her own history she doesn't want known. Exposure is threatened...

One thousand years in the future, the zyme, a thick blanket of luminous green slime, covers the oceans. Glaciers three-miles-high rise over the continents. The old stories say that when the Jemen, godlike beings from the past, realized their efforts to halt global warming had gone terribly wrong, they made a desperate gamble to save life on earth and recreated species that had survived the worst of the earth's Ice Ages. Sixteen-summers-old Lynx and...