Who Knew? Human Anatomy

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This compendium of mind-blowing facts about the human body will help you achieve mastermind status in no time.Why are modern humans larger than people who lived 500 years ago? Can people spontaneously combust? How many organs could you live without? In  Who Knew? Human Anatomy , you’ll learn gobs of fascinating facts about the most sophisticated machine in the world—the human body. These pages are packed with information that you can use to dazzle your friends and family, and each chapter concludes with a quiz to test your knowledge. Each short article will teach you something extraordinary about what’s happening inside your body, leaving you to say to yourself, “Who knew?”