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Four billion years old, the oceans formed as the Earth's scorching surface cooled, the primordial atmosphere condensed, and torrential rains fell. Their color is the unique signature of our blue planet, their composition a chemical cocktail of remarkable variety, their waters a theater of constant change. 

Oceans: An Illustrated Reference tells the story of this last great frontier. With hundreds of beautiful full-color photographs and explanatory diagrams, charts, and maps, Oceans combines the visual splendor of ocean life with up-to-date scientific information to provide an invaluable and fascinating resource on this vital realm. Covering all major areas of oceanographic knowledge and research, Oceans is divided into two parts. The first, "Ocean Systems," examines the physical nature of the oceans, including plate tectonics, temperature and climate, waves and tides, natural resources and much more. The second, "Ocean Life,"explores biodiversity, evolution and adaptation, marine ecosystems and complex communities, and the preservation of fragile marine environments.

Oceans also offers readers a host of tools to better understand the magnificent world of the sea. A special section of bathymetric maps-made possible by satellite observation, deep-towed surveying craft, and remotely operated submarine vessels-provides a view of the depth and texture of ocean floors around the globe, giving us a glimpse of worlds rarely seen. And throughout the book, engagingly written special features delve into specific marine environments and phenomena such as the lost Tethys Ocean, from which the Himalayas were born. Cross-references and a detailed index help readers navigate this multifaceted volume, and a glossary provides clear definitions of scientific vocabulary.

Although the oceans are vast, their resources are finite. Oceans clearly presents the future challenge to us all-that of ensuring that our common ocean heritage is duly respected, wisely managed, and carefully harnessed for the benefit of the whole planet. Lavishly illustrated and filled with current research, Oceans is a step in that direction: a rich, magnificent, and illuminating volume for anyone who has ever heard the siren song of the sea.

The river, like a keen memory, carries a record of the past.” David Faldet has spent forty years in the basin of the Upper Iowa River, which winds from the flat farm fields of southern Minnesota through the wooded valleys of northeast Iowa to the Mississippi. In this peaceful and inspiring book, Faldet tells the story of the Upper Iowa as it flows through land and people, holding true to Aldo Leopold’s conception of land as a community in which water, people, and soil play interactive parts.

Whether profiling the chief of the last hunter-gatherers on the river, an early settler witnessing her first prairie fire and a modern wildlife biologist using fire to manage prairies, the manager of the Granger Farmer’s Co-op Creamery, or a landowner whose bottomlands are continually eaten away by floods, Faldet steadily develops the central idea that people are walking tributaries of the river basin in which they make their homes.

Faldet moves through the history of life along the now-polluted Upper Iowa, always focusing on the ways people depend on the river, the environment, and the resources of the region. He blends contemporary conversations, readings from the historical record, environmental research, and personal experience to show us that the health of the river is best guaranteed by maintaining the biological communities that nurture it. In return, taking care of the Upper Iowa is the best way to take care of our future.

For more than thirty years, scientists from various disciplines have warned that the constant increase in world population and exponential world economic growth are seriously threatening our ecosystems. The vision on which this book is based is of an ongoing, adaptable societal process which leads the world down the path towards sustainability. In this vision, the speed of global environmental changes will be drastically reduced without forgoing the good life; at the same time prosperity will be distributed more fairly.

The oceans are an important foundation of our lives - they regulate our climate and are an invaluable source of food. However, we threaten their health by heating up the planet, over-fishing and polluting these waters.