Get ready to amaze your friends—and yourself—with incredible calculations you never thought you could master, as renowned “mathemagician” Arthur Benjamin shares his techniques for lightning-quick calculations and amazing number tricks. This book will teach you to do math in your head faster than you ever thought possible, dramatically improve your memory for numbers, and—maybe for the first time—make mathematics fun.Yes, even you can learn to do seemingly complex equations in your head; all you need to learn are a few tricks. You’ll be able to quickly multiply and divide triple digits, compute with fractions, and determine squares, cubes, and roots without blinking an eye. No matter what your age or current math ability, Secrets of Mental Math will allow you to perform fantastic feats of the mind effortlessly. This is the math they never taught you in school.Also available as an eBook

    To accompany the BBC2 TV series, this book chronicles the Strawbridge family's journey from a perfectly normal life and house in the Midlands to a self-sufficient environmentally friendly dream home in the West Country. Written by the flamboyant, moustachioed, eccentric presenter, Dick the Colonel Strawbridge, this book is an inspiration to people thinking of becoming eco-friendly or even just a bit greener. Full of specially commissioned color photos and screen grabs, it is also full of practical advice, with essential addresses and contact details at the end.

    As he did so masterfully in Prime Obsession, Derbyshire brings the evolution of mathematical thinking to dramatic life by focusing on the key historical players. Unknown Quantity begins in the time of Abraham and Isaac and moves from Abel's proof to the higher levels of abstraction developed by Galois through modern-day advances. Derbyshire explains how a simple turn of thought from this plus this equals this to this plus what equals this? gave birth to a whole new way of perceiving the world. With a historian's narrative authority and a beloved teacher's clarity and passion, Derbyshire leads readers on an intellectually satisfying and pleasantly challenging historical and mathematical journey.

    The revised and updated edition of the classic guide praised by Library Journal as "a highly successful demystification of an increasingly popular art." The perfect book for a new generation of environmentally aware gardeners.

    And he has boiled it down to one key factor: walkability. The very idea of a modern metropolis evokes visions of bustling sidewalks, vital mass transit, and a vibrant, pedestrian-friendly urban core. But in the typical American city, the car is still king, and downtown is a place that's easy to drive to but often not worth arriving at. Making walkability happen is relatively easy and cheap; seeing exactly what needs to be done is the trick. In this essential new book, Speck reveals the invisible workings of the city, how simple decisions have cascading effects, and how we can all make the right choices for our communities. Bursting with sharp observations and real-world examples, giving key insight into what urban planners actually do and how places can and do change, Walkable City lays out a practical, necessary, and eminently achievable vision of how to make our normal American cities great again.

    This is Nick's story of his world record-breaking adventure and the extraordinary people who joined him along the way. On January 6th 2018, Nick Butter tied his laces and stepped out on to an icy pavement in Toronto, where he began to take the first steps of an epic journey that would see him run 196 marathons in every one of the world's 196 countries. Spending almost two years on the road and relying on the kindness of strangers to keep him moving, Nick's odyssey allowed him to travel slowly, on foot, immersing himself in the diverse cultures and customs of his host nations. Running through capital cities and deserts, around islands and through spectacular landscapes, Nick dodges bullets in Guinea-Bissau, crosses battlefields in Syria, survives a wild dog attack in Tunisia and runs around an erupting volcano in Guatemala. Along the way, he is often joined by local supporters and fellow runners, curious children and bemused passers-by. Telling their stories alongside his own, Nick captures the unique spirit of each place he visits and forges a new relationship with the world around him. Running the World captures Nick's journey as he sets three world records and covers over five thousand miles. As he recounts his adventures, he shares his unique perspective on our glorious planet, celebrates the diversity of human experience, and reflects on the overwhelming power of running.

    The first Indian Army officer to be promoted to the five-star rank of Field Marshal, Sam Bahadur continues to be the most admired of our Army Chiefs.

    The information is easily understood and readily applicable. More than 150 of Storey's expert authors in gardening, building, animal raising, and homesteading share their specialized knowledge and experience in this ultimate guide to living a more independent, satisfying life.Readers will find step-by-step, illustrated instructions for every aspect of country living including:Finding country landBuying, building, and renovating a homeDeveloping water sources and systemsUnderstanding wiring, plumbing, and heatingUsing alternative heating and energy sourcesVegetable, flower, and herb gardeningTraditional cooking skills such as baking bread and making maple syrupPreparing and preserving meat, fruits, and vegetablesBuilding and maintaining barns, sheds, and outbuildingsCaring for common farm and ranch animals, and pets

    The second volume in The Traditional Bowyer's Bible series covers ancient European bows, Eastern Woodland bows, recurves, strings, steel points, quivers, and much more.

    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.

    Sandor Katz presents the concepts and processes behind fermentation in ways that are simple enough to guide a reader through their first experience making sauerkraut or yogurt, and in-depth enough to provide greater understanding and insight for experienced practitioners.While Katz expertly contextualizes fermentation in terms of biological and cultural evolution, health and nutrition, and even economics, this is primarily a compendium of practical information--how the processes work; parameters for safety; techniques for effective preservation; troubleshooting; and more.With two-color illustrations and extended resources, this book provides essential wisdom for cooks, homesteaders, farmers, gleaners, foragers, and food lovers of any kind who want to develop a deeper understanding and appreciation for arguably the oldest form of food preservation, and part of the roots of culture itself.Readers will find detailed information on fermenting vegetables; sugars into alcohol (meads, wines, and ciders); sour tonic beverages; milk; grains and starchy tubers; beers (and other grain-based alcoholic beverages); beans; seeds; nuts; fish; meat; and eggs, as well as growing mold cultures, using fermentation in agriculture, art, and energy production, and considerations for commercial enterprises. Sandor Katz has introduced what will undoubtedly remain a classic in food literature, and is the first--and only--of its kind.

    In this newly revised edition, chapters have been rewritten to accommodate the impact of computer technology and the Internet, not only on the acquisition and analysis of data, but also on its organization and presentation. Alternatives to the use of radiation have been expanded, and figures and illustrations have been redrawn to reflect changes in laboratory equipment and procedures.

    How has the climate changed in the past?How is it changing now?How do we know?And what kind of a future do we want to create?

    Useful for health workers, clinicians, and others involved in primary health care delivery and health promotion programs, with millions of copies in print in more than 75 languages, the manual provides practical, easily understood information on how to diagnose, treat, and prevent common diseases. Special attention is focused on mutrition, infection and disease prevention, and diagnostic techniques as primary ways to prevent and treat health problems. This 2010 reprint features updated medicines, plus information on tuberculosis and HIV, including guidelines for anti-retroviral therapy and preventing HIV in babies.

    This is incidental as it is about neither of those industries in particular. It is about the magic and wonderment of those days as seen through the eyes of a child – my eyes! It is about the days when imagination was the biggest plaything that we possessed. The days when a plastic football provided a whole summer's play. It is about the scrapes that I found myself in and the things that I observed around me, and how they made me feel. All the stories are true and I personally experienced every one of them. The names of the characters have been changed. The reason being that I have no idea of the whereabouts of many of the characters contained within my stories, so I have no way of asking them for their permission to include them in this book. Some have possibly passed away, and it would be unfair of me to mention them without their blessing. Anyone who knows me will know who they are though.