When natural gas drilling moves into an urban or a suburban neighborhood, a two-hundred-foot-high drill appears on the other side of a back yard fence and diesel trucks clog a quiet two-lane residential street. Children seem to be having more than the usual number of nosebleeds. There are so many local cases of cancer that the elementary school starts a cancer support group.
The biosphere—the Earth’s thin layer of life—dates from nearly four billion years ago, when the first simple organisms appeared. Many species have exerted enormous influence on the biosphere’s character and productivity, but none has transformed the Earth in so many ways and on such a scale as Homo sapiens. In Harvesting the Biosphere, Vaclav Smil offers an interdisciplinary and quantitative account of human claims on the biosphere’s stores of living matter, from prehistory to the present day.
Today, there are thousands of synthetic chemicals used to make our clothing, cosmetics, household products, electronic devices, even our children’s toys. Many of these chemicals help us live longer and more comfortable lives, but some of these highly useful chemicals are also persistent, toxic, and dangerous to our health and the environment. For fifty years, the conventional approach to hazardous chemicals has focused on regulation, barriers, and protection.
In this book, Vaclav Smil argues that power density is a key determinant of the nature and dynamics of energy systems. Any understanding of complex energy systems must rely on quantitative measures of many fundamental variables. Power density—the rate of energy flux per unit of area—is an important but largely overlooked measure. Smil provides the first systematic, quantitative appraisal of power density, offering detailed reviews of the power densities of renewable energy flows, fossil fuels, thermal electricity generation, and all common energy uses.
Most of us are familiar with the term climate change but few of us understand the science behind it. We don’t fully comprehend how climate change will affect us, and for that reason we might not consider it as pressing a concern as, say, housing prices or unemployment. This book explains the scientific knowledge about global climate change clearly and concisely in engaging, nontechnical language, describes how it will affect all of us, and suggests how government, business, and citizens can take action against it.
We will not find “exposure to burning coal” listed as the cause of death on a single death certificate, but tens of thousands of deaths from asthma, chronic obstructive pulmonary disease, lung cancer, heart attacks, strokes, and other illnesses are clearly linked to coal-derived pollution. As politicians and advertising campaigns extol the virtues of “clean coal,” the dirty secret is that coal kills. In The Silent Epidemic, Alan Lockwood, a physician, describes and documents the adverse health effects of burning coal.
Climate engineering—which could slow the pace of global warming by injecting reflective particles into the upper atmosphere—has emerged in recent years as an extremely controversial technology. And for good reason: it carries unknown risks and it may undermine commitments to conserving energy. Some critics also view it as an immoral human breach of the natural world. The latter objection, David Keith argues in A Scientist’s Case for Climate Engineering, is groundless; we have been using technology to alter our environment for years.
Viewed from above, Greenland offers an endless vista of whiteness interrupted only by scattered ponds of azure-colored melt water. Ninety percent of Greenland is covered by ice; its ice sheet, the largest outside Antarctica, stretches almost 1,000 miles from north to south and 600 miles from east to west. But this stark view of ice and snow is changing—and changing rapidly. Greenland’s ice sheet is melting; the dazzling, photogenic display of icebergs breaking off Greenland’s rapidly melting glaciers has become a tourist attraction.
The future is not what it used to be because we can no longer rely on the comforting assumption that it will resemble the past. Past abundance of fuel, for example, does not imply unending abundance. Infinite growth on a finite planet is not possible.