Why do people laugh? Why can some people roll their tongues but others can't? How will future astronauts deal with the strains of long trips through space? When you swing a bat at a baseball, why can't you keep your eye on the ball? These and other explorations in this book cover some of the most fascinating questions about our bodies. Jack Myers also explains some of the health threats of our time, such as sunburn, smoking, and loud sounds.
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Why do people laugh? Why can some people roll their tongues but others can't? How will future astronauts deal with the strains of long trips through space? When you swing a bat at a baseball, why can't you keep your eye on the ball? These and other explorations in this book cover some of the most fascinating questions about our bodies. Jack Myers also explains some of the health threats of our time, such as sunburn, smoking, and loud sounds.
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