Introduces the concept of ratio by comparing what humans would be able to do if they had bodies like different animals.

A girl describes how her skin, bones, muscles, brain, blood, heart, lungs, and stomach receive energy and function as parts of her body.

An introduction to the human body and how it functions, including simple experiments which demonstrate the principles presented.

"We humans like to think of ourselves as highly evolved creatures. But if we are supposedly evolution's greatest creation, why do we have such bad knees? Why do we catch head colds so often--two hundred times more often than a dog? How come our wrists have so many useless bones? Why is the vast majority of our genetic code pointless? And are we really supposed to swallow and breathe through the same narrow tube? Surely there's been some kind of mistake....

"Born blind in Vietnam, Julie Yip-Williams narrowly escaped euthanasia by her grandmother, only to then flee the political upheaval of the late 1970s with her family. Loaded into a rickety boat with three hundred other refugees, Julie made it to Hong Kong and, ultimately, America, where a surgeon at UCLA gave her partial sight. Against all odds, she became a Harvard-educated lawyer, with a husband, a family, a life. Then, at age thirty-seven, with...

Publisher Annotation: Would you be able to guess an animal if you could see only its tail? Clever clues and a turn of the page reveal its identity. Whether the answer is a slow-moving turtle or a slippery-scaled snake, kids will delight in sharpening their creature-identification skills. Fine-lined illustrations adapted from nineteenth-century artwork give this book a classic feel, paired with soft watercolors and simple, colorful text to keep young...

Have you ever wondered what goes on inside your body? What happens to the food you eat and the air you breathe? Discover the fascinating world of the human body through this book -- a fun and informative introduction for young biology fans! -- cover.