Written for both the casual reader and the science buff hungry for new information, The Vision Revolution is a resource that dispels commonly believed perceptions about sight and offers answers drawn from the field’s most recent research.Changizi focuses on four “why” questions:1. Why do we see in color?2. Why do our eyes face forward?3. Why do we see illusions?4. Why does reading come so naturally to us?Why Do We See in Color?It was commonly believed that color vision evolved to help our primitive ancestors identify ripe fruit. Changizi says we should look closer to home: ourselves. Human color vision evolved to give us greater insights into the mental states and health of other people. People who can see color changes in skin have an advantage over their color-blind counterparts; they can see when people are blushing with embarrassment, purple-faced with exertion or the reddening of rashes. Changizi’s research reveals that the cones in our eyes that allow us to see color are exquisitely designed exactly for seeing color changes in the skin. And it’s no coincidence that the primates with color vision are the ones with bare spots on their faces and other body parts; Changizi shows that the development of color vision in higher primates closely parallels the loss of facial hair, culminating in the near hairlessness and highly developed color vision of humans.Why Do Our Eyes Face Forward?Forward-facing eyes set us apart from most mammals, and there is much dispute as to why we have them. While some speculate that we evolved this feature to give us depth perception available through stereo vision, this type of vision only allows us to see short distances, and we already have other mechanisms that help us to estimate distance. Changizi’s research shows that with two forward-facing eyes, primates and humans have an x-ray ability. Specifically, we’re able to see through the cluttered leaves of the forest environment in which we evolved. This feature helps primates see their targets in a crowded, encroached environment. To see how this works, hold a finger in front of your eyes. You’ll find that you’re able to look “through” it, at what is beyond your finger. One of the most amazing feats of two forward-facing eyes? Our views aren’t blocked by our noses, beaks, etc.Why Do We See Illusions?We evolved to see moving objects, not where they are, but where they are going to be. Without this ability, we couldn’t catch a ball because the brain’s ability to process visual information isn’t fast enough to allow us to put our hands in the right place to intersect for a rapidly approaching baseball. “If our brains simply created a perception of the way the world was at the time light hit the eye, then by the time that perception was elicited—which takes about a tenth of a second for the brain to do—time would have marched on, and the perception would be of the recent past,” Changizi explains. Simply put, illusions occur when our brain is tricked into thinking that a stationary two-dimensional picture has an element that is moving. Our brains project the “moving” element into the future and, as a result, we don’t see what’s on the page, but what our brain thinks will be the case a fraction of a second into the future.Why Does Reading Come So Naturally to Us?We can read faster than we can hear, which is odd, considering that reading is relatively recent, and we’ve evolved to process speech for millions of years. Changizi’s research reveals that language has been carefully designed to tap in to elements of the visual processing center that have evolved for tens of millions of years. Visual signs of all languages are shaped like objects in nature, Changizi says, because we have evolved to see nature easily. “People have noticed letters in nature for some time, and there are artists who have a spent a lot of time photographing Latin letters in natural scenes or on butterfly wings,” Changizi says. “For example, if you look at an upper corner of the room you are in, you will see three contours meeting at a point, making a shape close to that of a ‘Y.’“ The Vision Revolution expands upon how our ancestors found the shapes of Latin letters and delves into how visual signs can have similar shapes even though their inspirations come from very different environments.In addition to these four areas, The Vision Revolution explores other phenomena such as cyclopses, peeking and many more you hadn’t even thought to wonder about. Changizi shows how deeply involved these evolutionary aspects of our vision are in why we see the way we do—and what the future holds for us.“…to understand how culture interacts with vision, one must understand not just the eye’s design, but the actual mechanisms we have evolved,” Changizi says, “for culture can tap in to both the designed responses of our brains and the unintended responses.”The Vision Revolution is a book that finally gives attention to what before has been largely neglected by other works on human vision—a book that looks at the “why.”

    The first person to live to 150 years has probably already been born. What will your life look like when you live to be over 100? Will you be healthy? Will your marriage need a sunset clause? How long will you have to work? Will you finish one career at sixty-five only to go back to school to learn a new one? And then, will you be happily working for another sixty years? Maybe you’ll be a parent to a newborn and a grandparent at the same time. Will the world become overpopulated? And how will living longer affect your finances, your family life, and your views on religion and the afterlife? In 100 Plus, futurist Sonia Arrison takes us on an eye-opening journey to the future at our doorsteps, where science and technology are beginning to radically change life as we know it. She introduces us to the people transforming our lives: the brilliant scientists and genius inventors and the billionaires who fund their work. The astonishing advances to extend our lives—and good health—are almost here. In the very near future fresh organs for transplants will be grown in laboratories, cloned stem cells will bring previously unstoppable diseases to their knees, and living past 100 will be the rule, not the exception. Sonia Arrison brings over a decade of experience researching and writing about cutting-edge advances in science and technology to 100 Plus, painting a vivid picture of a future that only recently seemed like science fiction, but now is very real. 100 Plus is the first book to give readers a comprehensive understanding of how life-extending discoveries will change our social and economic worlds. This illuminating and indispensable text will help us navigate the thrilling journey of life beyond 100 years.

    They've heard everything from “My two-year-old gets constant ear infections. Should I give her antibiotics? Or probiotics?” to “I heard that my son’s asthma was caused by a lack of microbial exposure. Is this true, and if so what can I do about it now?”Google these questions, and you’ll be overwhelmed with answers. The internet is rife with speculation and misinformation about the risks and benefits of what most parents think of as simply germs, but which scientists now call the microbiome: the combined activity of all the tiny organisms inside our bodies and the surrounding environment that have an enormous impact on our health and well-being. Who better to turn to for answers than Drs. Gilbert and Knight, two of the top scientists leading the investigation into the microbiome—an investigation that is producing fascinating discoveries and bringing answers to parents who want to do the best for their young children. Dirt Is Good is a comprehensive, authoritative, accessible guide you've been searching for.

    We get cancer because we can't avoid it—it's a bug in the system of life itself.Cancer exists in nearly every animal and has afflicted humans as long as our species has walked the earth. In Rebel Cell: Cancer, Evolution, and the New Science of Life's Oldest Betrayal, Kat Arney reveals the secrets of our most formidable medical enemy, most notably the fact that it isn't so much a foreign invader as a double agent: cancer is hardwired into the fundamental processes of life. New evidence shows that this disease is the result of the same evolutionary changes that allowed us to thrive. Evolution helped us outsmart our environment, and it helps cancer outsmart its environment as well—alas, that environment is us.Explaining why "everything we know about cancer is wrong," Arney, a geneticist and award-winning science writer, guides readers with her trademark wit and clarity through the latest research into the cellular mavericks that rebel against the rigid biological "society" of the body and make a leap towards anarchy.We need to be a lot smarter to defeat such a wily foe—smarter even than Darwin himself. In this new world, where we know that every cancer is unique and can evolve its way out of trouble, the old models of treatment have reached their limits. But we are starting to decipher cancer's secret evolutionary playbook, mapping the landscapes in which these rogue cells survive, thrive, or die, and using this knowledge to predict and confound cancer's next move.Rebel Cell is a story about life and death, hope and hubris, nature and nurture. It's about a new way of thinking about what this disease really is and the role it plays in human life. Above all, it's a story about where cancer came from, where it's going, and how we can stop it.

    She conjures up early operating theaters--no place for the squeamish--and surgeons, working before anesthesia, who were lauded for their speed and brute strength. These medical pioneers knew that the aftermath of surgery was often more dangerous than their patients' afflictions, and they were baffled by the persistent infections that kept mortality rates stubbornly high. At a time when surgery couldn't have been more hazardous, an unlikely figure stepped forward: a young, melancholy Quaker surgeon named Joseph Lister, who would solve the deadly riddle and change the course of history.Fitzharris dramatically recounts Lister's discoveries in gripping detail, culminating in his audacious claim that germs were the source of all infection--and could be countered by antiseptics. Focusing on the tumultuous period from 1850 to 1875, she introduces us to Lister and his contemporaries--some of them brilliant, some outright criminal--and takes us through the grimy medical schools and dreary hospitals where they learned their art, the deadhouses where they studied anatomy, and the graveyards they occasionally ransacked for cadavers.Eerie and illuminating, The Butchering Art celebrates the triumph of a visionary surgeon whose quest to unite science and medicine delivered us into the modern world.

     Loss of memory is not a natural part of aging--and this book explains why.Celebrated neurologist David Perlmutter reveals how everyday memory-loss--misplacing car keys, forgetting a name, losing concentration in meetings--is actually a warning sign of a distressed brain. Here he and Carol Colman offer a simple plan for repairing those problems, clarifying misconstrued connections between memory loss and aging, and regaining and maintaining mental clarity by offering the tools for:Building a better brain through nutrition, lifestyle changes, and brain workoutsCoping with specific brain disorders such as stroke, vascular dementia, Alzheimer's, Parkinson's, multiple sclerosis, and Lou Gehrig's diseaseUnderstanding risk factors and individually tailoring a diet and supplementary programFeatures a Life Style Audit, quizzes, a brain fitness program with the most effective ways to exercise your brain, and a nutritional program that details the best brain food and supplements.

    Even before recorded history began, disease plagued human civilizations, claiming more lives than natural disasters and warfare combined. The ongoing battle with new and resurgent diseases has challenged physicians, scientists, and historians in their struggle to identify causes, antidotes, and preventative measures to combat these epidemics. Analyzing case studies including the Black Death, Spanish Flu, cholera, leprosy, syphilis, cancer, and Ebola, this book systematically maps the development of trends and the latest research on disease into a concise and enlightening timeline. Offering a fascinating and compelling insight into a popular area of social history, this easy-to-read introduction will tell you all you need to know about disease and the ongoing quest to protect human health.

    government’s Human Genome Project. Venter hoped that by decoding the genome ahead of schedule, he would speed up the pace of biomedical research and save the lives of thousands of people. He also hoped to become very famous and very rich. Calling his company Celera (from the Latin for “speed”), he assembled a small group of scientists in an empty building in Rockville, Maryland, and set to work.At the same time, the leaders of the government program, under the direction of Francis Collins, head of the National Human Genome Research Institute at the National Institutes of Health, began to mobilize an unexpectedly unified effort to beat Venter to the prize—knowledge that had the potential to revolutionize medicine and society. The stage was set for one of the most thrilling—and important—dramas in the history of science. The Genome War is the definitive account of that drama—the race for the greatest prize biology has had to offer, told by a writer with exclusive access to Venter’s operation from start to finish. It is also the story of how one man’s ambition created a scientific Camelot where, for a moment, it seemed that the competing interests of pure science and commercial profit might be gloriously reconciled—and the national repercussions that resulted when that dream went awry.From the Hardcover edition.

    

    In Bones, orthopedic surgeon Roy A. Meals explores and extols this amazing material that both supports and records vertebrate life.Inside the body, bone proves itself the world’s best building material. Meals examines the biological makeup of bones; demystifies how they grow, break, and heal; and compares the particulars of human bone to variations throughout the animal kingdom. In engaging and clear prose, he debunks familiar myths—humans don’t have exactly 206 bones—and illustrates common bone diseases, like osteoporosis and arthritis, and their treatments. Along the way, he highlights the medical innovations—from the first X-rays to advanced operative techniques—that enhance our lives and introduces the giants of orthopedic surgery who developed them.After it has supported vertebrate life, bone reveals itself in surprising ways—sometimes hundreds of millions of years later. With enthusiasm and humor, Meals investigates the diverse roles bone has played in human culture throughout history. He highlights allusions to bone in religion and literature, from Adam’s rib to Hamlet’s skull, and uncovers its enduring presence as fossils, technological tools, and musical instruments ranging from the Tibetan thighbone kangling horn to everyday drumsticks. From the dawn of civilization through to the present day, humankind has repurposed bone to serve and protect, and even to teach, amuse, and inspire.Approachable and entertaining, Bones richly illuminates our bodies’ essential framework.

    

    Guyton & Hall's Textbook of Medical Physiology covers all of the major systems in the human body, while emphasizing system interaction, homeostasis, and pathophysiology. This very readable, easy-to-follow, and thoroughly updated, 11th Edition features a new full-color layout, short chapters, clinical vignettes, and shaded summary tables that allow for easy comprehension of the material.The smart way to study!Elsevier titles with STUDENT CONSULT will help you master difficult concepts and study more efficiently in print and online! Perform rapid searches. Integrate bonus content from other disciplines. Download text to your handheld device. And a lot more. Each STUDENT CONSULT title comes with full text online, a unique image library, case studies, USMLE style questions, and online note-taking to enhance your learning experience.Presents short, easy-to-read chapters in keeping with the Guyton and Hall tradition.Provides shaded summary tables for easy reference.Includes clinical vignettes, which allow readers to see core concepts applied to real-life situations.Offers specific discussions of pathophysiology in most clinical areas of medicine.Ensures a strong grasp of physiology concepts through well-illustrated discussions of the most essential principles.Now in full color! Offers access to the full text and other valuable features online via the STUDENT CONSULT website.Uses full-color illustrations throughout, including 486 figures, 277 charts and graphs, 100 brand-new line drawings, and 36 ECGs.Features a new full-color design that makes information more engaging and even easier to read.Updated throughout to reflect the latest knowledge in the field.

    In The Cool Impossible, Orton shares his wealth of knowledge in an inspiring step-by-step guide that will open up a new world of achievement for runners of all levels of ability and experience.The truth is: Athleticism is awareness. That simple phrase is at the core of The Cool Impossible. Athleticism requires awareness of form and technique, awareness of our effort level, and, most important, awareness of what we think (and don’t think). And with that awareness comes the possibility of endless potential and improvement, progress and mastery—and, ultimately, achievement that you never before would have thought possible.With a program focused on proper running form, strength development, and cardiovascular training, Orton will help first-step beginners, prime-time competitors, and enduring veterans reach “the cool impossible”—the belief that any achievement, athletic or otherwise, is within our reach. Inside you’ll find:* Foot strength exercises to catapult performance, combat injuries, and transform technique* A total-body strength program aimed at creating an athletic running body* Step-by-step run-form coaching for performance enhancement and lifelong healthy running* A run-training program providing the building blocks for endurance, strength, and speed* No-nonsense nutrition strategies for performance, health, and the ultimate running body* Visualization and mind-training tactics to run and live the Cool Impossible*And much more…Natural running is about so much more than barefoot running. It’s about the joy of running that we were all naturally born with and can reawaken. Like a favorite running companion, The Cool Impossible will be there with you, stride for stride and mile for mile, helping you go farther than you ever could have on your own.Includes a foreword by Christopher McDougall.

    They discuss how scientists are working out the clockwork mechanisms and what governs them, and they describe how organisms measure different intervals of time, how they are adapted to various cycles, and how light coordinates the time within to the external world. They review problems that can be caused by malfunctioning biological clocks—including jet lag, seasonal affective disorder, and depression. And they warn that although new drugs are being promoted to allow us to stay awake for longer periods, a 24/7 lifestyle can have a harmful impact on our health, both as individuals and as a society.

    Scott guides readers through the latest advances in stem cell research in clear, accessible language, telling the stories of the researchers who are exploring the potential of stem cells to cure cancer, grow new organs, and repair the immune system. He also leads readers through a discussion of the question at the heart of the explosive ethical debate: How, as a society, do we balance our responsibilities to the unborn and the sick? Stem Cell Now is essential reading for anyone who wants to build an informed opinion on stem cell research.