Discover true stories about the vast universe, our amazing planet Earth, incredible animals and humans, and astounding feats of engineering. Did you know that the edge of the observable universe is 13.7 billion light-years away? That just 1 percent of Earth's water is liquid and fresh? Or that an elephant's molar weighs up to 9 lb (4 kg)? Astound your friends and family with this collection of fantastic facts and figures from across the world.