Covering 71 percent of the planet, these saline bodies of water provided the unique conditions necessary for the building blocks of life to form billions of years ago. This book explains how our oceans continue to support and influence life in important ways: by providing the largest global source of protein in the form of fish populations, by creating and influencing weather systems, and by absorbing waste streams such as airborne carbon. It is shown how oceans have an almost magnetic draw-almost half of the world's population lives within a few hours of an ocean. Although oceans are vast in size, exceeding 328 million cubic miles (1.37 billion cubic kilometers), they have been influenced by and have influenced humans in numerous ways. The book includes three detailed case studies. The first focuses on the most remote locations along the Mid-Atlantic Ridge, where new ocean floor is being formed twenty-thousand feet underwater. The second considers the Maldives, a string of islands in the Indian Ocean, where increasing sea levels may force residents to abandon some communities by 2020. The third describes the North Sea at the edge of the Arctic Ocean, where fishing stocks have been dangerously depleted as a result of multiple nations' unrelenting removal of the smallest and largest species.

Covering 71 percent of the planet, these saline bodies of water provided the unique conditions necessary for the building blocks of life to form billions of years ago. This book explains how our oceans continue to support and influence life in important ways: by providing the largest global source of protein in the form of fish populations, by creating and influencing weather systems, and by absorbing waste streams such as airborne carbon. It is shown how oceans have an almost magnetic draw-almost half of the world's population lives within a few hours of an ocean. Although oceans are vast in size, exceeding 328 million cubic miles (1.37 billion cubic kilometers), they have been influenced by and have influenced humans in numerous ways. The book includes three detailed case studies. The first focuses on the most remote locations along the Mid-Atlantic Ridge, where new ocean floor is being formed twenty-thousand feet underwater. The second considers the Maldives, a string of islands in the Indian Ocean, where increasing sea levels may force residents to abandon some communities by 2020. The third describes the North Sea at the edge of the Arctic Ocean, where fishing stocks have been dangerously depleted as a result of multiple nations' unrelenting removal of the smallest and largest species.

Always awe-inspiring, mountainous areas contain hundreds of millions of years of history, stretching back to the earliest continental landforms. This book shows how mountains are characterized by their distinctive geological, ecological, and biological conditions. Often, they are so large that they create their own weather patterns. They also store nearly one-third of the world's freshwater-in the form of ice and snow-on their slopes. Despite their daunting size and often formidable climates, mountains are affected by growing local populations, as well as distant influences, such as air pollution and global climate change. Three detailed case studies are presented. The first shows how global warming in East Africa is harming Mount Kenya's regional population, which relies on mountain runoff to irrigate farms for subsistence crops. The second examines the fragile ecology of the South Island Mountain in New Zealand's Southern Alps and how development threatens the region's endemic plant and animal species. The third discusses the impact of mountain use over time in New Hampshire's White Mountains, where management efforts have been used to limit the growing footprint of millions of annual visitors and alpine trekkers.

Freshwater is our planet's most precious resource, and also the least conserved. Freshwater makes up only 3 percent of the total water on the planet, and yet the majority (1.9 percent) is held in a frozen state in glaciers, icebergs, and polar ice fields. This leaves approximately one-half of 1 percent of the total volume of water on the planet as freshwater available in liquid form. This book traces the complex history of the steady growth of humankind's water consumption, which today reaches some 9.7 quadrillion gallons per year. Along with a larger population has come the need for more drinking water, larger farms requiring extensive irrigation, and more freshwater to support business and industry. At the same time, such developments have led to increased water pollution. Three detailed case studies are included. The first looks at massive water systems in locations such as New York City and the efforts required to protect and transport such resources. The second shows how growth has affected freshwater quality in the ecologically unique and geographically isolated Lake Baikal region of eastern Russia. The third examines the success story of the privatized freshwater system in Chile and consider how that country's water sources are threatened by climate change.

Wetlands encompass a diversity of habitats that rely on the presence of water to survive. Over the last two centuries, these hard-to-reach areas have been viewed with disdain or eliminated by a public that saw them only as dangerous and worthless lowlands. This book tracks changing perceptions of one of the world's richest and biologically productive biomes and efforts that have been undertaken to protect many areas. With land development resulting in the loss of more than half of the world's wetlands, significant efforts are now under way to protect the remaining 5 million square miles. The author describes three noteworthy examples which demonstrate the resilience of wetland plants and animals and their ability to rebound from human-induced pressures. In Central Asia, the Aral Sea and its adjacent wetlands show promising regrowth, in part because of massive hydrology projects being implemented to undo years of damage to the area. The Everglades wetlands complex, spanning the lower one-third of Florida, is slowly reviving as conservation measures are implemented. Finally it is shown how Lake Poyang in southeastern China has experienced increased ecological health as a result of better resource management and community education programs focused on the vital role that wetlands play in a healthy environment.

Always awe-inspiring, mountainous areas contain hundreds of millions of years of history, stretching back to the earliest continental landforms. This book shows how mountains are characterized by their distinctive geological, ecological, and biological conditions. Often, they are so large that they create their own weather patterns. They also store nearly one-third of the world's freshwater-in the form of ice and snow-on their slopes. Despite their daunting size and often formidable climates, mountains are affected by growing local populations, as well as distant influences, such as air pollution and global climate change. Three detailed case studies are presented. The first shows how global warming in East Africa is harming Mount Kenya's regional population, which relies on mountain runoff to irrigate farms for subsistence crops. The second examines the fragile ecology of the South Island Mountain in New Zealand's Southern Alps and how development threatens the region's endemic plant and animal species. The third discusses the impact of mountain use over time in New Hampshire's White Mountains, where management efforts have been used to limit the growing footprint of millions of annual visitors and alpine trekkers.

Freshwater is our planet's most precious resource, and also the least conserved. Freshwater makes up only 3 percent of the total water on the planet, and yet the majority (1.9 percent) is held in a frozen state in glaciers, icebergs, and polar ice fields. This leaves approximately one-half of 1 percent of the total volume of water on the planet as freshwater available in liquid form. This book traces the complex history of the steady growth of humankind's water consumption, which today reaches some 9.7 quadrillion gallons per year. Along with a larger population has come the need for more drinking water, larger farms requiring extensive irrigation, and more freshwater to support business and industry. At the same time, such developments have led to increased water pollution. Three detailed case studies are included. The first looks at massive water systems in locations such as New York City and the efforts required to protect and transport such resources. The second shows how growth has affected freshwater quality in the ecologically unique and geographically isolated Lake Baikal region of eastern Russia. The third examines the success story of the privatized freshwater system in Chile and consider how that country's water sources are threatened by climate change.

Forests are considered the lungs of the planet, as they consume and store carbon dioxide and produce oxygen. These biomes, defined as ecological communities dominated by long-lived woody vegetation, historically have provided an economic foundation for growing nations, supplying wood for buildings, firewood for fuel, and land for expanding cities and farms. For centuries, industrial nations in Europe and the United States have relied on large tracts of forestland for economic prosperity. The research presented in this book reveals that population pressures are causing considerable environmental distress in even the most remote forest areas. Three detailed case studies are presented. The first provides an assessment of illegal logging deep in South America's Amazon rain forest, a region closely tied to food and product demands thousands of miles away. The second examines the effect of increased hunting in Central Africa's Congo forest, which threatens wildlife, especially mammal species with slower reproductive cycles. Finally the third describes encroachment on old-growth tropical forests on the Southern Pacific island of Borneo, which today is better managed thanks to the collective planning and conservation efforts of the governments of Brunei, Indonesia, and Malaysia.

Forests are considered the lungs of the planet, as they consume and store carbon dioxide and produce oxygen. These biomes, defined as ecological communities dominated by long-lived woody vegetation, historically have provided an economic foundation for growing nations, supplying wood for buildings, firewood for fuel, and land for expanding cities and farms. For centuries, industrial nations in Europe and the United States have relied on large tracts of forestland for economic prosperity. The research presented in this book reveals that population pressures are causing considerable environmental distress in even the most remote forest areas. Three detailed case studies are presented. The first provides an assessment of illegal logging deep in South America's Amazon rain forest, a region closely tied to food and product demands thousands of miles away. The second examines the effect of increased hunting in Central Africa's Congo forest, which threatens wildlife, especially mammal species with slower reproductive cycles. Finally the third describes encroachment on old-growth tropical forests on the Southern Pacific island of Borneo, which today is better managed thanks to the collective planning and conservation efforts of the governments of Brunei, Indonesia, and Malaysia.