Mostrando títulos en Anatomía y Fisiología

Science is a force for good in the world—at least usually. But sometimes, when obsession gets the better of scientists, they twist a noble pursuit into something sinister. Under this spell, knowledge isn’t everything, it’s the only thing—no matter the cost. Bestselling author Sam Kean tells the true story of what happens when unfettered ambition pushes otherwise rational men and women to cross the line in the name of science, trampling ethical boundaries and often committing crimes in the process.

Thought of as the seat of our soul, then as a mysteriously animated object, the heart is still more a mystery than it is understood. Why do most animals only get one billion beats? (And how did modern humans get to over two billion - effectively letting us live out two lives?) Why are sufferers of gingivitis more likely to have heart attacks? And what does it really feel like to touch your own heart, or to have someone else's beating inside your chest?

Fifty thousand years ago - merely a blip in evolutionary time - our Homo sapiens ancestors were competing for existence with several other human species, just as their precursors had done for millions of years. Yet something about our species distinguished it from the pack, and ultimately led to its survival while the rest became extinct. Just what was it that allowed Homo sapiens to become masters of the planet? Ian Tattersall, curator emeritus at the American Museum of Natural History, takes us deep into the fossil record to uncover what made humans so special.

From an expert in pulmonary medicine, the story of our extraordinary lungs, the organ that both explains our origins and holds the keys to our future as a species.

Stepping effortlessly from myth to cutting-edge science, Mutants gives a brilliant narrative account of our genetic code and the captivating people whose bodies have revealed it - a French convent girl who found herself changing sex at puberty; children who, echoing Homer's Cyclops, are born with a single eye in the middle of their foreheads; a village of long-lived Croatian dwarves; one family, whose bodies were entirely covered with hair, was kept at the Burmese royal court for four generations and gave Darwin one of his keenest insights into heredity.

Insects walk on water, snakes slither, and fish swim. Animals move with astounding grace, speed, and versatility: how do they do it, and what can we learn from them? In How to Walk on Water and Climb up Walls, David Hu takes listeners on an accessible, wondrous journey into the world of animal motion. From basement labs at MIT to the rain forests of Panama, Hu shows how animals have adapted and evolved to traverse their environments, taking advantage of physical laws with results that are startling and ingenious.

In Fast Asleep, Dr. Michael Mosley brings together the latest, groundbreaking science to explain exactly why it is so important that we regularly get enough sleep. Prone to insomnia, he has taken part in numerous sleep experiments and tested every sleep remedy. Combining personal insight and in-depth research, he explains why so many of us struggle with sleep, what works and what doesn’t, and shares his own myth-busting program to help you achieve a good night’s rest.

Journalist Jeff Bercovici spent extensive time with professional and Olympic athletes, coaches, and doctors to find how today's sports superstars seemed to be able to defy the limits of physical aging that inevitably sideline their competitors. Through fascinating profiles and first-person anecdotes, Bercovici illuminates the science and strategies extending the careers of elite older athletes, uncovers the latest advances in fields from nutrition to brain science to virtual reality, and offers empowering insights about how the rest of us can find peak performance at any age.

Physiological constraints confine our bodies to less than one-fifth of the earth's surface. Beyond that fraction lie the extremes. What happens when we go to them? Dr. Kenneth Kamler has spent years observing exactly what happens. A vice president of the legendary Explorers Club, he has climbed, dived, sledded, floated, and trekked through some of the most treacherous and remote regions in the world. A consultant for NASA, Yale University, and the National Geographic Society, he has explored undersea caves, crossed the frozen Antarctic wastelands, and more.

That the average adult spends 50 to 70 percent of their day sitting is no surprise to anyone who works in an office environment. But few realize the health consequences they are suffering as a result of modernity's increasingly sedentary lifestyle, or the effects it has had on society at large. In Get Up!, health expert James A. Levine's original scientific research shows that today's chair-based world, where we no longer use our bodies as they evolved to be used, is having negativeconsequences on our health.

From blurry vision to crooked teeth, ACLs that tear at alarming rates and spines that seem to spend a lifetime falling apart, it's a curious thing that human beings have beaten the odds as a species. After all, we're the only survivors on our branch of the tree of life. Why is it that human mothers have such a life-endangering experience giving birth? And why are there entire medical specialties for teeth and feet? In this funny, wide-ranging and often surprising book, biologist Alex Bezzerides tells us just where we inherited our achy, brilliant bodies in the process of evolution.

For centuries, poets and philosophers extolled the benefits of a walk in the woods: Beethoven drew inspiration from rocks and trees; Wordsworth composed while tromping over the heath; Nikola Tesla conceived the electric motor while visiting a park. Intrigued by our storied renewal in the natural world, Florence Williams sets out to uncover the science behind nature's positive effects on the brain.

With its trillions of connections, the human brain is more beautiful and complex than anything we could ever build, but it’s far from perfect: our memory is unreliable; we can’t multiply large sums in our heads; advertising manipulates our judgment; we tend to distrust people who are different from us; supernatural beliefs and superstitions are hard to shake; we prefer instant gratification to long-term gain; and what we presume to be rational decisions are often anything but.

Interweaving history, original reportage, and personal narrative, Pandemic explores the origin of epidemics, drawing parallels between the story of cholera - one of history's most disruptive and deadly pathogens - and the new pathogens that stalk humankind today, from Ebola and avian influenza to drug-resistant superbugs.

An exploration, both personal and deeply reported, of how we learn to eat in today's toxic food culture. When her newborn daughter stopped eating after a medical crisis, Virginia Sole-Smith spent two years teaching her how to feel safe around food again - and in the process, realized just how many of us are struggling to do the same thing.

You are just 10% human. For every one of the cells that make up the vessel that you call your body, there are nine impostor cells hitching a ride. You are not just flesh and blood, muscle and bone, brain and skin, but also bacteria and fungi. Over your lifetime, you will carry the equivalent weight of five African elephants in microbes. You are not an individual but a colony. Until recently, we had thought our microbes hardly mattered, but science is revealing a different story, one in which microbes run our bodies and becoming a healthy human is impossible without them.

V. S. Ramachandran is at the forefront of his field - so much so that Richard Dawkins dubbed him the "Marco Polo of neuroscience". Now, in a major new work, Ramachandran sets his sights on the mystery of human uniqueness. Taking us to the frontiers of neurology, he reveals what baffling and extreme case studies can teach us about normal brain function and how it evolved.

In Replaceable You, Mary Roach sets sail on the uncharted waters of regenerative medicine, exploring the remarkable advances and difficult questions prompted by the human body’s failings. When and how does a person decide they’d be better off with a prosthetic than their existing limb? Is there a sensitive way to harvest tissue and bones from the deceased? Which animals might be the best organ donors? Through interviews with patients, physicians, pathologists, engineers, and scientists, Roach immerses listeners in the wondrous, improbable, and surreal quest to build a new you.

Through riveting personal stories and the latest research, Harvard evolutionary biologist Carole Hooven shows how testosterone drives the behavior of the sexes apart and how understanding the science behind this hormone is empowering for all.

A successful Wall Street trader turned Cambridge neuroscientist reveals the biology of boom and bust and how risk taking transforms our body chemistry, driving us to extremes of euphoria and risky behavior or stress and depression. The laws of financial boom and bust, it turns out, have more than a little to do with male hormones. In a series of groundbreaking experiments, Dr. John Coates identified a feedback loop between testosterone and success that dramatically lowers the fear of risk.