His breaking of the German U-boat Enigma cipher in World War II ensured Allied-American control of the Atlantic. But Turing's vision went far beyond the desperate wartime struggle. Already in the 1930s he had defined the concept of the universal machine, which underpins the computer revolution. In 1945 he was a pioneer of electronic computer design. But Turing's true goal was the scientific understanding of the mind, brought out in the drama and wit of the famous "Turing test" for machine intelligence and in his prophecy for the twenty-first century.Drawn in to the cockpit of world events and the forefront of technological innovation, Alan Turing was also an innocent and unpretentious gay man trying to live in a society that criminalized him. In 1952 he revealed his homosexuality and was forced to participate in a humiliating treatment program, and was ever after regarded as a security risk. His suicide in 1954 remains one of the many enigmas in an astonishing life story.

    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

    Now Pollan turns his sharp insight to the craft of building, as he recounts the process of designing and constructing a small one-room structure on his rural Connecticut property--a place in which he hoped to read, write and daydream, built with his two own unhandy hands.Invoking the titans of architecture, literature and philosophy, from Vitrivius to Thoreau, from the Chinese masters of feng shui to the revolutionary Frank Lloyd Wright, Pollan brilliantly chronicles a realm of blueprints, joints and trusses as he peers into the ephemeral nature of "houseness" itself. From the spark of an idea to the search for a perfect site to the raising of a ridgepole, Pollan revels in the infinitely detailed, complex process of creating a finished structure. At once superbly written, informative and enormously entertaining, A Place of My Own is for anyone who has ever wondered how the walls around us take shape--and how we might shape them ourselves.A Place of My Own recounts his two-and-a-half-year journey of discovery in an absorbing narrative that deftly weaves the day-to-day work of design and building--from siting to blueprint, from the pouring of foundations to finish carpentry--with reflections on everything form the power of place to shape our lives to the question of what constitutes "real work" in a technological society.A book about craft that is itself beautifully crafted, linking the world of the body and material things with the realm of mind, heart, and spirit, A Place of My Own has received extraordinary praise.

    These properties are seen over and over in nature and in the cities and streets of the past, but they have almost disappeared in the impersonal developments and buildings of the last hundred years.This book shows that living structures depend on features which make a close connection with the human self, and that only living structure has the capacity to support human well-being.

    Unlikely Friendships tells one story after another of animals who, with nothing else in common, bond in the most unexpected ways and thrive on the warmth, closeness, and trust that come with being true friends.Imagine a predator cuddling its prey. Or a bird befriending a mammal. Or a fish poking its nose out of the water to nuzzle a dog. Or a massive gorilla - the one named Koko, famous for her ability to communicate in sign language - embracing a tiny kitten.Science writer Jennifer S. Holland narrates each story, and also offers insights into these relationships. Sometimes there are plausible scientific explanations: an orphan seeking comfort from an older animal; an adult yearning for a younger creature to nurture. Consider the lioness who befriended and protected a baby oryx - unexpected, but not inexplicable. Sometimes a friendship is about need, as in the case of the blind Lab and her "seeing-eye" cat. B ut sometimes it's just a lovely mystery. How else can one explain the story of Owen the hippo and Mzee the tortoise, two notoriously surly creatures who became bosom buddies?Each story reveals the true power of friendship and, to some degree, the many forms of "love" that seem to exist in the animal kingdom. Yes, scientists might scoff at that notion, but readers may feel a little differently about the world after they finish this book.