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It's hard to believe that common cold and flu symptoms, which are so disgusting, can actually be so useful! The science of why we sneeze, cough, or throw up is enthralling and necessary to understanding why our bodies react the way they do when we're not feeling well. This informative book details why and how the body performs such a gross reflex, and whether it means a person is sick or not. Filled with resources and self-care tips, this is a great guide for young readers to understand the mechanics of the respiratory and digestive systems.
Kids love gross things, and germs are among the grossest. This engaging volume capitalizes on the grossness factor, while covering the science behind germs, what they are, where they are found, and how they cause diseases. It gives kids the information they need to stay clean and healthy without fearing germs. Readers will learn that most bacteria do not cause diseases, but provide us with food and medicines, and help maintain soil and other ecosystems. This book also cautions against overkill of germs, which can lead to antibiotic resistance and super-bacteria.
The world is full of stinky smells, such as sweaty feet, dirty diapers, rotting food, and wet dogs. Some smells are so bad, they can make a person gag or run in the opposite direction. In this book, readers will examine what causes bad smells, why some objects smell more than others, and how smells travel. They will also explore how the nose and brain detect and recognize different smells. With high-interest content and special features that include a Myths and Facts and 10 Great Questions to Ask a Specialist sidebars, this engrossing book will attract even hesitant readers.
They live in clothes, on hair, on skin, they live under the skin, in guts, in blood. They're parasites, and they're really into us. But what are these small, squirmy, highly successful organisms? How did they evolve to live inside other organisms, to consume, sicken, and even kill them? Readers will enter the engrossing inner world of bugs, worms, and microbes, explore their riveting life cycles, and discover how these tiny creatures topple civilizations and ruin lives. Readers will learn how to avoid infection or infestation, and what to do if parasites have let themselves in.
Athlete's foot is an itchy, flaky, burning, sometimes gooey fungal infection that commonly occurs among athletes, but athletes aren't the only ones affected. This condition can happen to anyone at any age. Readers will learn symptoms of the ailment, as well as what causes it and how it's treated. Information includes the biology of fungi, mold, yeast, and bacteria responsible for athlete's foot and its complications. Treatments discussed include over-the-counter and prescription drugs, as well as natural remedies. Steps to prevent infection also feature ways to keep it from returning once it's cured.
From hog hair toothbrushes and cavities packed in linen to rechargeable electric toothbrushes and laser dentistry, dental care has come a long way. Over thousands of years, as the field of dentistry has evolved, research has provided answers to the gross but fascinating science that's behind bad breath and cavities. This comprehensive guide offers readers the chance to learn about the thousands, sometimes millions, of microorganisms that live in people's mouths, the history of oral hygiene, and the many myths, facts, causes, and treatments related to bad breath and cavities.
Provine boldly goes where other scientists seldom tread—in search of hiccups, coughs, yawns, sneezes, and other lowly, undignified, human behaviors. Our earthiest instinctive acts bear the imprint of our evolutionary origins and can be valuable tools for understanding how the human brain works and what makes us different from other species.
Reprint of the original, first published in 1867.