In this picture book classic, travel with young Walter on a fantastical adventure as he journeys—by way of his bed—into a polluted dreamscape world that wakes him up to our collective and individual environmental responsibility.Walter does not appreciate the beauty of nature, or understand his role in keeping the planet healthy . . . until a fantastic journey shows him the tragic fate that could befall Earth if humans like him are not more careful.Chris Van Allsburg (The Polar Express) pairs pitch-perfect narrative with his full-color pastel illustrations, rendering this picture book a story that has stood the test of time."Two-time Caldecott Medalist Van Allsburg reaches a new pinnacle of excellence in both illustration and storytelling in his latest work." (Publishers Weekly)