(I) If you travel across America, you will see some of the great sights of the natural world. (II) Between Alaska's forests and Florida's swamps you will cross the Rocky Mountains, the deserts of Arizona, the Mississippi and much else. (III) Vast areas of the world's largest temperate rainforest have been cut down. (IV) You will be struck by the magnificence of what you see. (V) You will be struck, too, by the battering that nature has taken.