The Coolest Stuff on Earth: A Closer Look at the Weird, Wild, and Wonderful (National Geographic Kids)Uncover the secrets behind our planet's most magnificent marvels, epic extremes, and astonishing animals in this fact packed series sequel! Did you know that dogs can shake off a pound of water in less than a second? That some sand dunes whistle and sing? That the U. S. dollar bill is full of hidden symbols related to the number 13? Our world is filled with strange, bizarre, and weird happenings. But what do they mean? WHY are they important? And what