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Timely and unsettling essays from an important and beloved writer and conservationist In Erosion, Terry Tempest Williams's fierce, spirited, and magnificent essays are a howl in the desert. She sizes up the continuing assaults on America's public lands and the erosion of our commitment to the open space of democracy. She asks: "How do we find the strength to not look away from all that is breaking our hearts?" We know the elements of erosion: wind, water, and time. They have shaped the spectacular physical landscape of our nation. Here, Williams bravely and brilliantly explores the many forms of erosion we face: of democracy, science, compassion, and trust. She examines the dire cultural and environmental implications of the gutting of Bear Ears National Monument—sacred lands to Native Peoples of the American Southwest; of the undermining of the Endangered Species Act; of the relentless press by the fossil fuel industry that has led to a panorama in which "oil rigs light up the horizon." And she testifies that the climate crisis is not an abstraction, offering as evidence the drought outside her door and, at times, within herself. These essays are Williams's call to action, blazing a way forward through difficult and dispiriting times. We will find new territory—emotional, geographical, communal. The erosion of desert lands exposes the truth of change. What has been weathered, worn, and whittled away is as powerful as what remains. Our undoing is also our becoming. Erosion is a book for this moment, political and spiritual at once, written by one of our greatest naturalists, essayists, and defenders of the environment. She reminds us that beauty is its own form of resistance, and that water can crack stone.
Discusses the latest information regarding the processes and mechanisms responsible for runoff and erosion by water in arable lands--detailing state-of-the-art water and soil conservation methods. Elucidates the rehabilitation of agricultural lands depleted by human activity.
Dirt, soil, call it what you want—it's everywhere we go. It is the root of our existence, supporting our feet, our farms, our cities. This fascinating yet disquieting book finds, however, that we are running out of dirt, and it's no laughing matter. An engaging natural and cultural history of soil that sweeps from ancient civilizations to modern times, Dirt: The Erosion of Civilizations explores the compelling idea that we are—and have long been—using up Earth's soil. Once bare of protective vegetation and exposed to wind and rain, cultivated soils erode bit by bit, slowly enough to be ignored in a single lifetime but fast enough over centuries to limit the lifespan of civilizations. A rich mix of history, archaeology and geology, Dirt traces the role of soil use and abuse in the history of Mesopotamia, Ancient Greece, the Roman Empire, China, European colonialism, Central America, and the American push westward. We see how soil has shaped us and we have shaped soil—as society after society has risen, prospered, and plowed through a natural endowment of fertile dirt. David R. Montgomery sees in the recent rise of organic and no-till farming the hope for a new agricultural revolution that might help us avoid the fate of previous civilizations.
Earth is changing every day. Erosion makes giant mountains smaller and rivers wider, but it happens so slowly most people don't even notice. Do you know what erosion is? Or what causes it? Explore the amazing eroding world in this book.
Earth is constantly changing. Wind, water, and even humans change Earth's surface. The land is broken down and worn away by erosion. Introduce students to weathering and erosion with this science reader that features easy-to-read text. Nonfiction text features include a glossary, index, and detailed images to facilitate close reading and help students connect back to the text. Aligned to state and national standards, the book also includes a fun and engaging science experiment to develop critical thinking and help students practice what they have learned.
Examines the different forces of erosion, such as wind, waves, acid rain, and glaciers and explains how those forces affect the topography of the earth.--
Explains how weather and water wear away rock and includes two experiments to assist in understanding how erosion works.
Wind erosion occurs in many arid, semiarid and agricultural areas of the world. It is an environmental process in?uenced by geological and climatic variations as well as human activities. In general, wind erosion leads to land degradation in agricultural areas and has a negative impact on air quality. Dustemissiongeneratedbywinderosionisthelargestsourceofaerosolswhich directly or indirectly in?uence the atmospheric radiation balance and hence global climatic variations. Strong wind-erosion events, such as severe dust storms, may threaten human lives and cause substantial economic damage. The physics of wind erosion is complex, as it involves atmospheric, soil and land-surface processes. The research on wind erosion is multidisciplinary, covering meteorology, ?uid dynamics, soil physics, colloidal science, surface soil hydrology, ecology, etc. Several excellent books have already been written about the topic, for instance, by Bagnold (1941, The Physics of Blown Sand and Desert Dunes), Greeley and Iversen (1985, Wind as a Geological P- cess on Earth, Mars, Venus and Titan), Pye (1987, Aeolian Dust and Dust Deposits), Pye and Tsoar (1990, Aeolian Sand and Sand Dunes). However, considerable progress has been made in wind-erosion research in recent years and there is a need to systematically document this progress in a new book.
The second edition of this acclaimed, accessible textbook brings the subject of sedimentation and erosion up-to-date, providing an excellent primer on both fundamental concepts of sediment-transport theory and methods for practical applications. The structure of the first edition is essentially unchanged, but all the chapters have been updated, with several chapters reworked and expanded significantly. Examples of the new additions include the concept of added mass, the Modified Einstein Procedure, sediment transport by size fractions, sediment transport of sediment mixtures, and new solutions to the Einstein Integrals. Many new examples and exercises have been added. Erosion and Sedimentation is an essential textbook on the topic for students in civil and environmental engineering and the geosciences, and also as a handbook for researchers and professionals in engineering, the geosciences and the water sciences.
Soil Erosion and How to Prvent It helps young readers see the real impact of erosion on all life. This intriguing book describes the processes of weathering, erosion, and deposition, the impact of erosion on plants and animals, and kid-friendly steps to preventing erosion.