These luminous, entertaining essays travel both the vastness of the cosmos and the intimacy of the human mind, posing such fascinating questions as how did the universe originate and how will it end, and how can we meld science and compassion to meet the challenges of the coming century? Here, too, is a rare, private glimpse of Sagan's thoughts about love, death, and God as he struggled with fatal disease. Ever forward-looking and vibrant with the sparkle of his unquenchable curiosity, Billions & Billions is a testament to one of the great scientific minds of our day.

    xn + yn = zn, where n represents 3, 4, 5, ...no solution"I have discovered a truly marvelous demonstration of this proposition which this margin is too narrow to contain."With these words, the seventeenth-century French mathematician Pierre de Fermat threw down the gauntlet to future generations.  What came to be known as Fermat's Last Theorem looked simple; proving it, however, became the Holy Grail of mathematics, baffling its finest minds for more than 350 years.  In Fermat's Enigma--based on the author's award-winning documentary film, which aired on PBS's "Nova"--Simon Singh tells the astonishingly entertaining story of the pursuit of that grail, and the lives that were devoted to, sacrificed for, and saved by it.  Here is a mesmerizing tale of heartbreak and mastery that will forever change your feelings about mathematics.

    Now, in everyday language, Stephen Hawking's Universe reveals step-by-step how we can all share his understanding of the cosmos, and our own place within it. Stargazing has never been the same since cosmologists discovered that galaxies are moving away from each other at an extraordinary speed. It was this understanding of the movement of galaxies that allowed scientists to develop a theory of how the universe was created—the Big Bang theory. Working with this theory, Stephen Hawking and other physicists felt challenged to come up with a scientific picture that would tackle the fundamental question: what is the nature of the universe? Stephen Hawking's Universe charts this work and provides simple explanations for phenomena that arouse our curiosity. This work is a voyage of discovery with an astonishing set of conclusions that will enable us to understand how matter can be produced from nothing at all and will provide us with an explanation for the basis of our existence and that of everything around us.

    Best of all, he's a gifted writer who possesses a delightfully devilish sense of humor. In these essays, which range widely but mostly focus on the relationships between biology and human behavior, hard and intricate science is handled with a deft touch that makes it accessible to the general reader. In one memorable piece, Sapolsky compares the fascination with tabloid TV to behavior he's observed among wild African baboons. "Rubber necks," notes the professor, "seem to be a common feature of the primate order." In the title essay of The Trouble with Testosterone, Sapolsky ruminates on the links, real or perceived, between that hormone and aggression.Covering such broad topics as science, politics, history, and nature, the author of Why Zebras Don't Get Ulcers writes accessible and interesting essays that explore the human struggle with moral and ethical problems in today's world. 20,000 first printing.

    In The Life of the Cosmos, Smolin cuts the Gordian knot of cosmology with a simple, powerful idea: "The underlying structure of our world, " he writes, "is to be found in the logic of evolution." Today's physicists have overturned Newton's view of the universe, yet they continue to cling to an understanding of reality not unlike Newton's own - as a clock, an intricate mechanism, governed by laws which are mathematical and eternally true. Smolin argues that the laws of nature we observe may be in part the result of a process of natural selection which took place before the big bang. Smolin's ideas are based on recent developments in cosmology, quantum theory, relativity and string theory, yet they offer, at the same time, an unprecedented view of how these developments may fit together to form a new theory of cosmology. From this perspective, the lines between the simple and the complex, the fundamental and the emergent, and even between the biological and the physical are redrawn. The result is a framework that illuminates many intractable problems, from the paradoxes of quantum theory and the nature of space and time to the problem of constructing a final theory of physics. As he argues for this new view, Smolin introduces the reader to recent developments in a wide range of fields, from string theory and quantum gravity to evolutionary theory the structure of galaxies. He examines the philosophical roots of controversies in the foundations of physics, and shows how they may be transformed as science moves towardunderstanding the universe as an interrelated, self-constructed entity, within which life and complexity have a natural place, and in which "the occurrence of novelty, indeed the perpetual birth of novelty, can be understood."

    Guth’s startling theory—widely regarded as one of the most important contributions to science during the twentieth century—states that the big bang was set into motion by a period of hyper-rapid “inflation,” lasting only a billion-trillion-billionth of a second. The Inflationary Universe is the passionate story of one leading scientist’s effort to look behind the cosmic veil and explain how the universe began.

    . . . Anyone with the slightest interest in biology should read this book."--The New York Times Book Review"A marvelous museum of the past four billion years on earth--capacious, jammed with treasures, full of learning and wide-eyed wonder."--The Boston GlobeFrom its origins on the still-forming planet to the recent emergence of Homo sapiens--one of the world's leading paleontologists offers an absorbing account of how and why life on earth developed as it did. Interlacing the tale of his own adventures in the field with vivid descriptions of creatures who emerged and disappeared in the long march of geologic time, Richard Fortey sheds light upon a fascinating array of evolutionary wonders, mysteries, and debates. Brimming with wit, literary style, and the joy of discovery, this is an indispensable book that will delight the general reader and the scientist alike."A drama bolder and more sweeping than Gone with the Wind . . . a pleasure to read."--Science"A beautifully written and structured work . . . packed with lucid expositions of science."--Natural History

    Turner's clear, insightful prose and Anton's masterly illustrations combine to offer specialists and newcomers alike an accurate and accessible guide to the evolution of cats.

    Timothy Ferris provides a clear, elegantly written overview of current research and a forecast of where cosmological theory is likely to go in the twenty-first century. He explores the questions that have occurred to even casual readers -- who are curious about nature on the largest scales: What does it mean to say that the universe is "expanding," or that space is "curved"? -- and sheds light on the possibility that our universe is only one among many universes, each with its own physical laws and prospects for the emergence of life.

    In fact, he points out, our cooperative instincts may have evolved as part of mankind?s natural selfish behavior--by exchanging favors we can benefit ourselves as well as others.Brilliantly orchestrating the newest findings of geneticists, psychologists, and anthropologists, The Origins of Virtue re-examines the everyday assumptions upon which we base our actions towards others, whether in our roles as parents, siblings, or trade partners. With the wit and brilliance of The Red Queen, his acclaimed study of human and animal sexuality, Matt Ridley shows us how breakthroughs in computer programming, microbiology, and economics have given us a new perspective on how and why we relate to each other.

    The elaborate mating rituals, lavish decorative displays, complex songs, calls, dances and many other forms of animal signaling raise fascinating questions. To what degree can animals communicate within their own species and even between species? What evolutionary purpose do such communications serve? Perhaps most importantly, what can animal signaling tell us about our own non-verbal forms of communication? In The Handicap Principle, Amotz and Ashivag Zahavi offer a unifying theory that brilliantly explains many previously baffling aspects of animal signaling and holds up a mirror in which ordinary human behaviors take on surprising new significance. The wide-ranging implications of the Zahavis' new theory make it arguably the most important advance in animal behavior in decades. Based on 20 years of painstaking observation, the Handicap Principle illuminates an astonishing variety of signaling behaviors in animals ranging from ants and ameba to peacocks and gazelles. Essentially, the theory asserts that for animal signals to be effective they must be reliable, and to be reliable they must impose a cost, or handicap, on the signaler. When a gazelle sights a wolf, for instance, and jumps high into the air several times before fleeing, it is signaling, in a reliable way, that it is in tip-top condition, easily able to outrun the wolf. (A human parallel occurs in children's games of tag, where faster children will often taunt their pursuer before running). By momentarily handicapping itself--expending precious time and energy in this display--the gazelle underscores the truthfulness of its signal. Such signaling, the authors suggest, serves the interests of both predator and prey, sparing each the exhaustion of a pointless chase. Similarly, the enormous cost a peacock incurs by carrying its elaborate and weighty tail-feathers, which interfere with food gathering, reliably communicates its value as a mate able to provide for its offspring. Perhaps the book's most important application of the Handicap Principle is to the evolutionary enigma of animal altruism. The authors convincingly demonstrate that when an animal acts altruistically, it handicaps itself--assumes a risk or endures a sacrifice--not primarily to benefit its kin or social group but to increase its own prestige within the group and thus signal its status as a partner or rival. Finally, the Zahavis' show how many forms of non-verbal communication among humans can also be explained by the Handicap Principle. Indeed, the authors suggest that non-verbal signals--tones of voice, facial expressions, body postures--are quite often more reliable indicators of our intentions than is language. Elegantly written, exhaustively researched, and consistently enlivened by equal measures of insight and example, The Handicap Principle illuminates virtually every kind of animal communication. It not only allows us to hear what animals are saying to each other--and to understand why they are saying it--but also to see the enormously important role non-verbal behavior plays in human communication.

    This book surveys the applicability of Egyptian concepts to our modern understanding of the nature of the universe, creation, science, and philosophy. Discover the Egyptian concept of monotheism, number mysticism, the universal energy matrix, how the social and political structures were a reflection of the universe, and the interactions between the nine universal realms, ...etc.

    This edition contains a wealth of new photographs from ground based telescopes and the Hubble Space Telescope, along with the best images from nearly four decades of robotic exploration of the planets.

    Current controversial social and legal issues such as mutual battering, child welfare and "failure to protect" policies, child custody and visitation rights for batterers, mandatory arrests, and welfare reform are also covered.Two new chapters devote attention to domestic violence in the military and to the challenging and rewarding role of those who work with battered women and their children.New resources have been included to reflect the ever-evolving wealth of books, web sites, and agencies available to both helpers and those in need.

    Clears up misconceptions about bats and answers common questions about their characteristics, appearance, and behavior.

    In the past decade, dinosaur paleontology has experienced an explosive growth. So rapidly has the field expanded that no individual can hope to master all its aspects. The editors have brought together 47 experts in subjects ranging from functional morphology and paleobiology to biogeography and systematics to present a thorough survey of dinosaurs from the earliest discoveries through the contemporary controverises over their extinction. Where contention exists, as over the question of whether dinosaurs, were warmblooded or cold-blooded, the editors have let the experts agree to disagree. Technical jargon is kept to a minimum, and there is a glossary of less familiar terms.

    S. Bach, we gain a striking picture of the composer as a unique critic of his age. By reading Bach's music "against the grain" of contemporaries such as Vivaldi and Telemann, Laurence Dreyfus explains how Bach's approach to musical invention in a variety of genres posed a fundamental challenge to Baroque aesthetics."Invention"--the word Bach and his contemporaries used for the musical idea that is behind or that generates a composition--emerges as an invaluable key in Dreyfus's analysis. Looking at important pieces in a range of genres, including concertos, sonatas, fugues, and vocal works, he focuses on the fascinating construction of the invention, the core musical subject, and then shows how Bach disposes, elaborates, and decorates it in structuring his composition. Bach and the Patterns of Invention brings us fresh understanding of Bach's working methods, and how they differed from those of the other leading composers of his day. We also learn here about Bach's unusual appropriations of French and Italian styles--and about the elevation of various genres far above their conventional status.Challenging the restrictive lenses commonly encountered in both historical musicology and theoretical analysis, Dreyfus provocatively suggests an approach to Bach that understands him as an eighteenth-century thinker and at the same time as a composer whose music continues to speak to us today.

    For everyone interested in science, history and biographies of extraordinary people - or anyone who wants to understand the workings of the physical world - this thorough and authoritative book is a perfect introduction to science's most profound discoveries, and a testament to the triumph of human knowledge.