Building these simple yet sophisticated machines introduces fundamentals of math and physics using levers, force, torsion, tension, and traction. Instructions and diagrams illustrate how to build seven authentic working model catapults, including an early Greek ballista, a Roman onager, and the apex of catapult technology, the English trebuchet. Additional projects include learning how to lash and make rope and how to construct and use a hand sling and a staff sling. The colorful history of siege warfare is explored through the stories of Alexander the Great and his battle of Tyre; Saladin, Richard the Lionheart, and the Third Crusade; pirate-turned-soldier John Crabbe and his ship-mounted catapults; and Edward I of England and his battle against the Scots at Stirling Castle.

    this is one of those rare books that will change your beliefs - and in doing so will change your life. tHE ANt AND tHE FERRARI offers readers a clear, navigable path through the big questions that confront us all today. What is the meaning of life? Can we be ethical beings in today's world? Can we know if there is life after death? Is there such a thing as Absolute truth? What caused the Big Bang and why should you care?

    And because you’re already more attuned to your physical and emotional needs, and more inclined to commit to a healthier lifestyle, you're poised to live brilliantly for the thirty-plus years after menopause. All you need now is the program outlined in Younger Next Year for Women—which, for starters, will help you avoid literally 70 percent of the decay and eliminate 50 percent of the injuries and illnesses associated with getting older. How? Drawn from disciplines as varied as evolutionary biology, cell physiology, experimental psychology and anthropology, the science behind Younger Next Year is clear. Our bodies are programmed to do one of two things: either grow or decay. Sitting in front of a screen all day tells the body to decay. Taking a walk or doing yoga tells the body to grow. Loneliness and stress trigger decay; love and laughter trigger growth. Just as clear as the science is the goal: Become the active gatekeeper of your own body and gain the power to control those signals of growth and decay. Seven simple rules show the way, from #1 Exercise six days a week for the rest of your life, to #6 Care, to #7 Connect and commit. They’re called Harry’s Rules, named for the doctor and coauthor—Henry S. Lodge, M.D.—who formulated them, and who explains the precise science behind each one. But since it’s one thing to know something’s good for you and quite another to put it into practice, Dr. Lodge, the scientist, is joined by Chris Crowley—coauthor, exhorter and living example—whose brusque charm and infectious enthusiasm will actually have you living by the rules. So, congratulations. You’re now about to get younger.

    The answers will surprise and delight you as Alexandra Horowitz, a cognitive scientist, explains how dogs perceive their daily worlds, each other, and that other quirky animal, the human.Temple Grandin meets Stephen Pinker in this engaging and informative look at what goes on inside the minds of dogs—from a cognitive scientist with a background at The New Yorker.With more than 52 million pet dogs in America today, it’s clear we are a nation of unabashed dog-lovers. Yet the relationship between dogs and humans remains a fascinating mystery, as no one really knows what goes on in the canine mind. Now, in Inside of a Dog, Alexandra Horowitz fuses her perspectives as both scientist and dog-owner to deliver a fresh look at the world of dogs—as seen from the animal’s point of view. Inspired by her years of living with her own dog, Pumpernickel, who was a constant source of delight and mystery, Horowitz’s mind became filled with questions and ideas. In crisp, clear prose, she draws on her research in the field of dog cognition to give readers a sense of a dog’s perceptual and cognitive abilities—and paints a picture of what the canine experience is like. Horowitz’s own scientific journey, and the insights she uncovered, allowed her to understand her dog better and appreciate her more.Containing up-to-the minute research and providing many moments of dog-behavior recognition, this lively and absorbing book helps dog owners to see their best friend’s behavior in a different, and revealing light, allowing them to understand their pets and enjoy their company even more.

    From ancient Rome to Edwardian England, from the lavish rooms of Versailles to the dankest corners of the Bastille, the great royals of Europe have excelled at savage parenting, deadly rivalry, pathological lust, and meeting death with the utmost indignity-or just very bad luck.

    Dreams aren't really anything like reality. Dreams are, well, they're more dreamy. You can just tell. Things happen in dreams that don't happen in reality. Usually, anyway. An intriguing tale that will instill readers with an abiding sense of philosophical wonder. If you're smitten with Sophie's World, you're sure to be entranced by The Dream Weaver. - Christopher Phillips, author, Socrates Cafe. Jack Bowen's novel is like traveling with Alice to a Wonderland inhabited by the greatest philosophers and scientists who ever lived... A triumph! - Wenda O'Reilly, Ph.D., President, Birdcage Press and author, The Impressionist Art Game. The Dream Weaver is an outstanding how-to-think book... This book is a philosophical odyssey that tackles the mysteries of life, of science, and of the meaning of reality. - Susanne Pari, author, The Fortune Catcher.

    Beautiful photography provides a close-up look at these terrifying "lords of the deep"--their anatomy and behavior, and the realities and myths behind their sinister reputation. This densely illustrated book is one of the most informative and technically accurate portrayals of sharks and their relatives."--(starred) Science Books & Films.

    Written by Blaine T. Bettinger, PhD, JD, and Debbie Parker Wayne, CG, CGL, the book provides family historians and genealogists who have just begun to explore genetic genealogy practical, easy to understand information that they can apply to their research. As Wayne notes in her blog, Deb’s "Delvings in Genealogy," “DNA can seem complex to many of us, but this book will guide you and help build your knowledge level one step at a time.” At their own pace, readers learn the basic concepts of genetic genealogy. They then build on that knowledge as they study the testing, analysis, and application of YDNA, X-DNA, mitochondrial DNA (mtDNA), and autosomal DNA (atDNA) to reach and support genealogical conclusions. Each chapter includes exercises with answer keys for hands-on practice. Blaine Bettinger is an intellectual property attorney in Syracuse, New York. The author of The Genetic Genealogist blog, he is a genealogy educator, a trustee of the New York Genealogical and Biographical Society, and organizer of the Shared cM Project, a crowdsourced project examining the associations between genetic data and genealogical relationships. Debbie Parker Wayne is a professional genealogist who has conducted research for individuals as well as for the PBS series “Finding Your Roots” with Henry Louis Gates Jr. and other television shows. She is an award-winning author, the coordinator for genetic genealogy institute courses, and the DNA Project Chair for the Texas State Genealogical Society.

    She is the most trusted name in British cooking and in How to Cook Delia Smith goes back to basics: Over 700 pages, 350 recipes and step-by-step photography, covering every technique you will ever need from how to boil an egg to Risotto Carbonara.

    Where do we come from? Who created us? Why are we here? These questions have puzzled us since the dawn of time, but when it became apparent to Jon Stewart and the writers of The Daily Show that the world was about to end, they embarked on a massive mission to write a book that summed up the human race: What we looked like; what we accomplished; our achievements in society, government, religion, science and culture -- all in a tome of approximately 256 pages with lots of color photos, graphs and charts. After two weeks of hard work, they had their book. EARTH (The Book) is the definitive guide to our species. With their trademark wit, irreverence, and intelligence, Stewart and his team will posthumously answer all of life's most hard-hitting questions, completely unburdened by objectivity, journalistic integrity, or even accuracy. Also available as an ebook and as an audiobook.

    While they're at it, they helpfully demystify many complicated things we do know about, from quarks and neutrinos to gravitational waves and exploding black holes. With equal doses of humor and delight, they invite us to see the universe as a vast expanse of mostly uncharted territory that's still ours to explore.This entertaining illustrated science primer is the perfect book for anyone who's curious about all the big questions physicists are still trying to answer.

    Topics range from ruminations on why Charles Dickens was among the best of writers and the worst of men to the haunting science fiction of J.G. Ballard; from the enduring legacies of Thomas Jefferson and George Orwell to the persistent agonies of anti-Semitism and jihad. Hitchens even looks at the recent financial crisis and argues for the enduring relevance of Karl Marx. The book forms a bridge between the two parallel enterprises of culture and politics. It reveals how politics justifies itself by culture, and how the latter prompts the former. In this fashion, Arguably burnishes Christopher Hitchens' credentials as (to quote Christopher Buckley) our "greatest living essayist in the English language."

    Discover why the sands of Hawaii are black, how volcanoes affect the ozone layer, what makes magma explode, what a pyrolcastic flow is, and much, much more.

    Packed with full-color illustrations and case studies, this new edition offers a cutting-edge presentation of criminalistics and related laboratory subjects, including new chapters on forensic nursing and forensic entomology/botany. Written by highly respected experts, the book covers the very latest theories and practices in areas such as DNA testing, crime reconstruction, toxicology, chemistry of explosives and arson, and vehicle reconstruction. Also included are an instructor's manual and laboratory exercise manual.

    He wanted to do it in a four-wheel drive, taking his own camper-trailer with him, to live at the edge of deserts and at the rim of tropical jungles, to drive the highest roads, and the lowest, to be free to make his own choices. He found a nut who wanted to do it with him, a picture editor of a leading man's magazine in New York, and the Trans World Expedition was born. This is their incredible journey. The did it, and how they did it is their tale told in his exciting book.