Soil contamination . . . public lands . . . surface and groundwater pollution . . . coastal erosion . . . global warming. Have we reached the limits of this planet's ability to provide for us? If so, what can we do about it?These vital questions are addressed in The Earth Around Us, a unique collection of thirty-one essays by a diverse array of today's foremost scientist-writers. Sharing an ability to communicate science in a clear and engaging fashion, the contributors explore Earth's history and processes--especially in relation to today's environmental issues--and show how we, as members of a global community, can help maintain a livable planet. The narratives in this collection are organized into seven parts that describe: Earth's time and history and the place of people on it Views of nature and the ethics behind our conduct on Earth Resources for the twenty-first century, such as public lands, healthy forests and soils, clean ground and surface waters, and fluctuating coastlines Ill-informed local manipulations of landscapes across the United States Innovative solutions to environmental problems that arise from knowledge of the interactions between living things and the Earth's air, water, and soil Natural and human-induced global scale perturbations to the earth system Our responsibility to people and all other organisms that live on Earth. Never before has such a widely experienced group of prominent earth scientists been brought together to help readers understand how earth's environment works. Driven by the belief that earth science is, and should be, an integral part of everyday life, The Earth Around Us empowers all of us to play a more educated and active part in the search for a sustainable future for our planet and its inhabitants.

Papers in this title were selected from presentations from an April 2005 workshop sponsored by the U.S. Geological Survey Earth Surface Dynamics Program, the U.S. Geological Survey National Cooperative Geologic Mapping Program, and the Smithsonian Institution. Papers are divided into two broad topics of the configuration, areal extent, and temporal development of the chain of interconnected lakes that emptied into Death Valley during periods of the Pleistocene, and the late Cenozoic history of drainage integration in the lower Colorado River region. Papers are occasionally illustrated in both color and black-and-white; the publication contains no index.

These proceedings record the results of climate change in many areas which are hyper-arid deserts today but which, almost cyclically, at intervals of thousands or even hundreds of thousands of years, have had a much more humid climate.