She muses on the tarnished reputation of the starling, the sexed-up antics of male woodpeckers, and the mysterious behavior and startling population explosion of crows in her hometown. Through the eye and voice of this talented writer, birds provide a fascinating point of contact with the natural world at large.

    It's the most miraculous substance on earth, responsible for our food, our weather, our water, and our ability to hear. In this exuberant book, gifted science writer Gabrielle Walker peels back the layers of our atmosphere with the stories of the people who uncovered its secrets: - A flamboyant Renaissance Italian discovers how heavy our air really is: The air filling Carnegie Hall, for example, weighs seventy thousand pounds. - A one-eyed barnstorming pilot finds a set of winds that constantly blow five miles above our heads. - An impoverished American farmer figures out why hurricanes move in a circle by carving equations with his pitchfork on a barn door. - A well-meaning inventor nearly destroys the ozone layer. - A reclusive mathematical genius predicts, thirty years before he's proved right, that the sky contains a layer of floating metal fed by the glowing tails of shooting stars.

    The discovery has been described as "the equivalent of finding a small dinosaur still alive on Earth."

    It's a great way to learn about nuclear physics!

    In simple, clear, concise terms the basics of map and compass work are described and illustrated." --George T. Hamilton, Appalachia This new, enlarged edition of Be Expert with Map & Compass includes everything the beginner needs to know about the increasingly popular sport of Orienteering: understanding map symbols; traveling by map alone, by compass alone, or by map and compass together; finding bearings; sketching maps; and traveling in the wilderness. Other updated sections cover competitive Orienteering, how to join an Orienteering event or organize your own, and useful hints for competitive and wilderness Orienteering. In addition to the revisions throughout, the author has interspersed the text with reminiscences of his more than fifty years of experience with map and compass. Drawing crowds of 25,000 participants at international events, the sport of Orienteering is more popular than ever. The Orienteering world championships were held in the United States for the first time in 1993. For Orienteers and scouts, avid outdoorspeople, and anyone who wants to feel more comfortable in the wilderness, this updated guide is an indispensable reference.

    The text examines the basics of analog image analysis while placing greater emphasis on digitally based systems and analysis techniques. The presentation is discipline neutral, so students in any field of study can gain a clear understanding of these systems and their virtually unlimited applications.

    This book contains student-friendly Study Tips, Clinical View boxes, and progressive question sets to motivate students to internalize and apply what they've learned.

    But how do they govern the world we live in? What was the difficult path to their discovery? Who were the key players that struggled to shape our current understanding? The Cosmic Machine​ takes you from the earliest scientific inquiries in human history on an exciting journey in search of the answers to these questions. In telling this fascinating story of science, the reader is masterfully guided through the wonderment of how scientific discoveries (and the key players of those discoveries) shaped the world as we know it today. With its unique blend of science, history, and biographies, The Cosmic Machine​ provides an easily accessible account without sacrificing the actual science itself. Not only will this book engage, enlighten, and entertain you, it will inspire your passion and curiosity for the world around us.

    College Edition, an online university library. At the core of this learning package is Ahrens' respected text, which presents the fundamental concepts of meteorology in the context of everyday weather observations. Fun and easy to understand and relate to, the book and its cumulative organization enables students to build on each concept and gain greater understanding into the dynamic nature of the atmosphere.

    Recovering from these calamities--and preventing their reoccurrence--was a major goal of the New Deal.In Nature's New Deal, Neil M. Maher examines the history of one of Franklin D. Roosevelt's boldest and most successful experiments, the Civilian Conservation Corps, describing it as a turning point both in national politics and in the emergence of modern environmentalism. Indeed, Rooseveltaddressed both the economic and environmental crises by putting Americans to work at conserving natural resources, through the Soil Conservation Service, the Tennessee Valley Authority, and the Civilian Conservation Corps (or CCC). The CCC created public landscapes--natural terrain altered byfederal work projects--that helped environmentalism blossom after World War II, Maher notes. Millions of Americans devoted themselves to a new vision of conservation, one that went beyond the old model of simply maximizing the efficient use of natural resources, to include the promotion of humanhealth through outdoor recreation, wilderness preservation, and ecological balance. And yet, as Maher explores the rise and development of the CCC, he also shows how the critique of its campgrounds, picnic areas, hiking trails, and motor roads frames the debate over environmentalism to this day.From the colorful life at CCC camps, to political discussions in the White House and the philosophical debates dating back to John Muir and Frederick Law Olmsted, Nature's New Deal captures a key moment in the emergence of modern environmentalism.

    He had thought that he'd already experienced everything that a normal life had to offer. He'd thought he could clearly see what his future holds. Then a sudden phone call changed everything. The Edge of the Abyss was the first full-scale virtual reality, where he was asked to complete a simple task... and which turned out to be far from heaven.He found himself in a terrifyingly realistic digital world whose rules he didn't know. Seemingly simple tasks suddenly required him to make moral choices - while refusing to do them would take him to places where the barrage of respawns could send one mad...

    Here are "...the choicest fruits of Thoreau..." — Nation.

    And just as surely, people have shaped the Atlantic. In his innovative account of this interdependency, W. Jeffrey Bolster, a historian and professional seafarer, takes us through a millennium-long environmental history of our impact on one of the largest ecosystems in the world.While overfishing is often thought of as a contemporary problem, Bolster reveals that humans were transforming the sea long before factory trawlers turned fishing from a handliner s art into an industrial enterprise. The western Atlantic s legendary fishing banks, stretching from Cape Cod to Newfoundland, have attracted fishermen for more than five hundred years. Bolster follows the effects of this siren s song from its medieval European origins to the advent of industrialized fishing in American waters at the beginning of the twentieth century.Blending marine biology, ecological insight, and a remarkable cast of characters, from notable explorers to scientists to an army of unknown fishermen, Bolster tells a story that is both ecological and human: the prelude to an environmental disaster. Over generations, harvesters created a quiet catastrophe as the sea could no longer renew itself. Bolster writes in the hope that the intimate relationship humans have long had with the ocean, and the species that live within it, can be restored for future generations.

    Starting with the story of her revolutionary discovery that elephants use infrasonic sounds--sounds below the range of human hearing--to communicate, Payne shares what she learned from her fascinating field research in Africa, research that reveals new insights into elephants' social lives. When five of the elephant families she studies are the victims of culling, Payne's approach to her research changes, as she fights valiantly to protect the elephants. The result of her research, and the touching insights gained from Africans she worked with and the elephants she studied, give a vivid impression of Payne's view from the front lines of the natural preservation effort. Like Peter Matthiessen's The Snow Leopard and the writings of Jane Goodall, Silent Thunder demonstrates how a commitment to all life can bring one's own into a new focus.

    But in the early twentieth century, an exotic plague swept through the chestnut forests with the force of a wildfire. Within forty years, the blight had killed close to four billion trees and left the species teetering on the brink of extinction. It was one of the worst ecological blows to North America since the Ice Age—and one most experts considered beyond repair. In American Chestnut, Susan Freinkel tells the dramatic story of the stubborn optimists who refused to let this cultural icon go. In a compelling weave of history, science, and personal observation, she relates their quest to save the tree through methods that ranged from classical plant breeding to cutting-edge gene technology. But the heart of her story is the cast of unconventional characters who have fought for the tree for a century, undeterred by setbacks or skeptics, and fueled by their dreams of restored forests and their powerful affinity for a fellow species.