But if we are supposedly evolution’s greatest creation, why do we have such bad knees? Why do we catch head colds so often—two hundred times more often than a dog does? How come our wrists have so many useless bones? Why is the vast majority of our genetic code pointless? And are we really supposed to swallow and breathe through the same narrow tube? Surely there’s been some kind of mistake. As professor of biology Nathan H. Lents explains in Human Errors, our evolutionary history is nothing if not a litany of mistakes, each more entertaining and enlightening than the last. The human body is one big pile of compromises. But that is also a testament to our greatness: as Lents shows, humans have so many design flaws precisely because we are very, very good at getting around them.   A rollicking, deeply informative tour of humans’ four billion year long evolutionary saga, Human Errors both celebrates our imperfections and offers an unconventional accounting of the cost of our success.

    There is one worksheet for each type of math problem including different digits with operations of addition, subtraction, multiplication and division. These varying level of mathematical ability activities help in improving adding, subtracting, multiplying and dividing operation skills of the student by frequent practicing of the worksheets provided.There is nothing more effective than a pencil and paper for practicing some math skills. These math worksheets are ideal for teachers, parents, students, and home schoolers. The companion ebook allows you to take print outs of these worksheets instantly or you can save them for later use. The learner can significantly improve math knowledge by developing a simple habit to daily practice the math drills.Tutors and homeschoolers use the maths worksheets to test and measure the child's mastery of basic math skills. These math drill sheets can save you precious planning time when homeschooling as you can use these work sheets to give extra practice of essential math skills. Parents use these mathematics worksheets for their kids homework practice too.Designed for after school study and self study, it is used by homeschooler, special needs and gifted kids to add to the learning experience in positive ways. You can also use the worksheets during the summer to get your children ready for the upcoming school term. It helps your child excel in school as well as in building good study habits. If a workbook or mathematic textbook is not allowing for much basic practise, these sheets give you the flexibility to follow the practice that your student needs for an education curriculum.These worksheets are not designed to be grade specific for students, rather depend on how much practice they've had at the skill in the past and how the curriculum in your school is organized. Kids work at their own level and their own pace through these activities. The learner can practice one worksheet a day, two worksheets a day, one every alternate day, one per week, two per week or can follow any consistent pattern. Make best use of your judgement.

    Maybe it's made of silicon! Maybe it has wheels! Or maybe it doesn't. In The Equations of Life, biologist Charles S. Cockell makes the forceful argument that the laws of physics narrowly constrain how life can evolve, making evolution's outcomes predictable. If we were to find on a distant planet something very much like a lady bug eating something like an aphid, we shouldn't be surprised. The forms of life are guided by a limited set of rules, and as a result, there is a narrow set of solutions to the challenges of existence.A remarkable scientific contribution breathing new life into Darwin's theory of evolution, The Equations of Life makes a radical argument about what life can -- and can't -- be.

    They use enormous amounts of energy to heat raw material, shape it with heavy machinery, and maintain its design, strength, and durability with toxic chemicals. Now, in a world of depleted natural resources, entrepreneurs and scientists are turning to nature to inspire future products that are more energy- and cost-efficient. Biomimicry, the science of employing nature to advance sustainable technology, is arguably one of the hottest new business concepts. At the center of this growing movement has been award-winning inventor and biomimetic entrepreneur Jay Harman.In The Shark's Paintbrush, Harman introduces us to pioneering engineers in a wide array of businesses who are uncovering and copying nature’s hidden marvels. He shows business leaders and aspiring entrepreneurs how we can reconcile creating more powerful, lucrative technologies with maximizing sustainability. He injects a whole new vocabulary and way of thinking into the business sphere that speaks to both small start-ups and corporate giants.

    An epic, first-of-its-kind book, entwining leading-edge scientific discovery with the intimate stories of four individual lives, by the Pulitzer Prize–winning New York Times journalist.A terminal cancer patient rises from the grave. A medical marvel defies HIV. Two women with autoimmunity discover their own bodies have turned against them. Matt Richtel's An Elegant Defense uniquely entwines these intimate stories with science’s centuries-long quest to unlock the mysteries of sickness and health, and illuminates the immune system as never before.The immune system is our body’s essential defense network, a guardian vigilantly fighting illness, healing wounds, maintaining order and balance, and keeping us alive. Its legion of microscopic foot soldiers—from T cells to “natural killers”—patrols our body, linked by a nearly instantaneous communications grid. It has been honed by evolution over millennia to face an almost infinite array of threats.For all its astonishing complexity, however, the immune system can be easily compromised by fatigue, stress, toxins, advanced age, and poor nutrition—hallmarks of modern life—and even by excessive hygiene. Paradoxically, it is a fragile wonder weapon that can turn on our own bodies with startling results, leading today to epidemic levels of autoimmune disorders.Richtel effortlessly guides readers on a scientific detective tale winding from the Black Plague to twentieth-century breakthroughs in vaccination and antibiotics, to the cutting-edge laboratories that are revolutionizing immunology—perhaps the most extraordinary and consequential medical story of our time. The foundation that Richtel builds makes accessible revelations about cancer immunotherapy, the microbiome, and autoimmune treatments that are changing millions of lives. An Elegant Defense also captures in vivid detail how these powerful therapies, along with our behavior and environment, interact with the immune system, often for the good but always on a razor’s edge that can throw this remarkable system out of balance.Drawing on his groundbreaking reporting for the New York Times and based on extensive new interviews with dozens of world-renowned scientists, Matt Richtel has produced a landmark book, equally an investigation into the deepest riddles of survival and a profoundly human tale that is movingly brought to life through the eyes of his four main characters, each of whom illuminates an essential facet of our “elegant defense.”

    In this unconventional introduction, physicist Leonard Susskind and hacker-scientist George Hrabovsky offer a first course in physics and associated math for the ardent amateur. Unlike most popular physics books—which give readers a taste of what physicists know but shy away from equations or math—Susskind and Hrabovsky actually teach the skills you need to do physics, beginning with classical mechanics, yourself. Based on Susskind's enormously popular Stanford University-based (and YouTube-featured) continuing-education course, the authors cover the minimum—the theoretical minimum of the title—that readers need to master to study more advanced topics.An alternative to the conventional go-to-college method, The Theoretical Minimum provides a tool kit for amateur scientists to learn physics at their own pace.

    It Combines Comprehensive Medical Content With Dynamic New Features And Interactive Technology To Better Support Instructors And To Help Prepare Students For The Field. An Interactive Skills DVD Is Also Packaged Free With Each Copy Of The Text.

    No matter how much time he spends outside, it's never enough. Whether being thrashed by drill instructors at Parris Island or drenched by a squall in some high tundra, the same calming thought always prevailed: It’s good to be outside."Home is Forward" is much more than a collection of travel stories. As a prequel to "Where's the Next Shelter?" it answers the question of how someone can go from having a (somewhat) normal life to casting it all aside and wanting to go live in the woods. Hilarious, poetic and often thoughtful, "Home is Forward" is also a story about people. From ancient ruins to frozen volcanos, lessons are learned, friendships are forged, and on top of it all, love blooms. So if you yearn to visit far off lands, or simply love a well spun tale, you’re in the right place.

    These are not inventions of fantasy or science fiction, but are places that really exist-in our own solar system.Now with 190,000 copies in print, here is a spectacular Grand Tour of the solar system featuring a unique blend of science and art-photographs along with dazzling full-color paintings, drawings, and maps based on years of astronomer William Hartmann's research, personal observation, and interviews with colleagues. In text and diagrams, too, The Grand Tour explains how the strange and uncanny worlds on the journeys came to be, and what it would be like to actually set foot upon them today. The book includes an atlas of the planets and their satellites, and of the Earth's moon. Complete with a selection of previously unpublished photographs taken by the Apollo astronauts, and by the Mariner, Viking, and Pioneer planetary probes, The Grand Tour is unique and breathtaking, majestic and eerie, and wonderful, taking the reader to more, and to the beyond. Selection of the Book-of-the-Month Club, Quality Paperback Book Club, and Newbridge Book Club.

    Guns are drawn, and in the ensuing hail of bullets, only the husband walks away. However, police soon find out, that what seems to be a robbery gone wrong is anything but. The Case of the Ragged Stranger, as the tabloids dubbed it, is a tale of deceit, betrayal, and depravity, a stranger-than-fiction mystery story whose shocking solution riveted the nation and made it one of the most sensational crimes of the Jazz Age.

    Our stories are marbled into their marrow.Drawing upon her years of research and a wealth of remarkable experience, the world-renowned forensic anthropologist Professor Dame Sue Black takes us on a journey of revelation. From skull to feet, via the face, spine, chest, arms, hands, pelvis and legs, she shows that each part of us has a tale to tell. What we eat, where we go, everything we do leaves a trace, a message that waits patiently for months, years, sometimes centuries, until a forensic anthropologist is called upon to decipher it.Some of this information is easily understood, some holds its secrets tight and needs scientific cajoling to be released. But by carefully piecing together the evidence, the facts of a life can be rebuilt. Limb by limb, case by case – some criminal, some historical, some unaccountably bizarre – Sue Black reconstructs with intimate sensitivity and compassion the hidden stories in what we leave behind.

    But how has the earth itself determined our destiny? Our planet wobbles, driving changes in climate that forced the transition from nomadism to farming. Mountainous terrain led to the development of democracy in Greece. Atmospheric circulation patterns later on shaped the progression of global exploration, colonization, and trade. Even today, voting behavior in the south-east United States ultimately follows the underlying pattern of 75 million-year-old sediments from an ancient sea. Everywhere is the deep imprint of the planetary on the human.From the cultivation of the first crops to the founding of modern states, Origins reveals the breathtaking impact of the earth beneath our feet on the shape of our human civilizations.

    He decried the internment of Japanese-Americans in World War Two, agitated against nuclear weapons, promoted vitamin C as a cure for the common cold and researched the idea of DNA.

    Its dramatically updated art program, more streamlined presentation of material, and integration of chapter objectives will help you better visualize and understand the structure and function of the human body. Elaine Marieb's clear and friendly writing style emphasizes the relevance of anatomy & physiology to your life and future career. The book clarifies concepts, defines key terms, and offers just the right balance of anatomy, physiology, and clinical coverage to make the content complete without being overwhelming. Elaine Marieb wrote this book specifically for the one-semester course and continues to carefully select a range of material that proves just right for the shorter course. New information on hot topics like the HPV Vaccine, Infantile Polycystic Kidney disease, and Sudden Infant Death Syndrome (SIDS) draws students into the material. This package contains: Essentials of Human Anatomy and Physiology, Tenth Edition

    Mark Plaster takes readers beyond the ambulance bay doors into the stranger-than-fiction world of the Emergency Department. By turns heart-warming and gut-wrenching, "Night Shift" chronicles the ebb and flow of human life, in all of its unvarnished glory, as it passes through the doors of the ED.