Intro; Title Page; Dedication; Part 1: Bodily Puzzles; 1. Why do we itch?; 2. What does earwax tell us about ourselves ... and blue whales?; 3. Why do we close our eyes when we sneeze?; 4. What can we learn about human evolution from the game of darts?; 5. If we have kneecaps, why don't we have elbow caps?; 6. Why do beans make us fart?; 7. Can we smell our way home?; 8. Which is more important, my big toe or my thumb?; 9. Why do our fingertips get wrinkly in water?; 10. Can we live for two hundred years?; History Mystery; Part 2: Mystifying Animals 1. How do homing pigeons find their way home?2. Why do moths fly to lights?; 3. What is a living fossil?; 4. How do squirrels find the nuts they bury?; 5. What is kopi luwak?; 6. Which animal has the most powerful bite?; 7. Do goldfish memories really last only three seconds?; 8. What animal has the biggest poop?; 9. Why do zebras have stripes?; History Mystery; Part 3: Peculiar Phenomena; 1. Does time slow down when we're in an emergency?; 2. Is there a way to choose the fastest checkout line at the grocery store?; 3. Why do headphone cords always get tangled? 4. Can wasps turn cockroaches into zombies?5. What is photographic memory?; 6. Why can't we break spaghetti in half?; 7. Why does a return trip always feel shorter?; History Mystery; Part 4: Curiosities and Oddities; 1. Am I putting the toilet paper on the roll the right way?; 2. How many universes might there be?; 3. Is it true that our eyes shoot beams wherever we look?; 4. Did knights have to be lifted onto their horses with cranes?; 5. What are nanobots?; 6. Do aliens exist?; 7. How far underground can living things be found? 8. Could we be cryonically frozen and then revived centuries later? History Mystery; Acknowledgments; About the Author; Copyright

Part 1: Bodily Puzzles
Part 2: Mystifying Animals
Part 3: Peculiar Phenomena
Part 4: Curiosities and Oddities

Back by popular demand: a brand-new volume of science queries, quirks, and quandaries in the mega-bestselling Science of Why series, sure to enlighten and entertain readers of all ages. Have you ever wondered why we close our eyes when we sneeze' Or how far underground things can live' Or if there's a way to choose the fastest lineup at the grocery store' Yes' Then fasten your seat belts! Bestselling author Jay Ingram is here to take you on a rollercoaster ride through science's most perplexing puzzles. From the age-old mysteries that have fascinated us to the pressing unknowns about our future and all the everyday wonderings in-between, Jay answers questions that confound and dumbfound, such as: Why do zebras have stripes' How many universes might there be' Can we live for 200 years' ... along with everything you ever wanted to know about alien civilizations, photographic memories, nanobots, poop, and (conveniently) toilet paper. Bursting with laugh-out-loud illustrations, jaw-dropping marvels, and head-scratching science fictions, The Science of Why, Volume 4 will give readers of all stripes a real thrill.

Junior High School Science

In English