Actual measurements of methane emissions were 60 to 110 percent greater than estimates. This is yet another marker that there is much more to be done to combat the causes of climate change.

There are more than 45,000 of them in the world. They have altered the speed of the planet’s rotation, the tilt of its axis, and the shape of its gravitational field. They influence landscapes and societies. They are dams, and in Deep Water, Jacques Leslie offers an incisive, searching, and beautifully written account of the emerging crisis over dams and the world’s water. Reporting in the tradition of John McPhee and Peter Matthiessen, Leslie examines the crisis through the lives of three people: Medha Patkar, the world’s foremost anti-dam activist; Thayer Scudder, an American anthropologist; and Don Blackmore, an Australian water manager. In each of these engrossing portraits, Leslie shows how dams seduce national leaders with seeming bounties of water and power but end up producing blights on the citizenry and landscape. Deep Water is an eloquent and important book about the water crisis and a startling look at the fate of our planet.

Second only to soda, bottled water is on the verge of becoming the most popular beverage in the country. The brands have become so ubiquitous that we’re hardly conscious that Poland Spring and Evian were once real springs, bubbling in remote corners of Maine and France. Only now, with the water industry trading in the billions of dollars, have we begun to question what it is we’re drinking.

Every day, we hear alarming news about droughts, pollution, population growth, and climate change—which threaten to make water, even more than oil, the cause of war within our lifetime. Diane Raines Ward reaches beyond the headlines to illuminate our most vexing problems and tells the stories of those working to solve them: hydrologists, politicians, engineers, and everyday people. Based on ten years of research spanning five continents, Water Wars offers fresh insight into a subject to which our fate is inextricably bound.

Ever since 9/11, many have considered al Queda to be the leading threat to global security, but falling water tables in countries that contain more than half the world’s people and rising temperatures worldwide pose a far more serious threat. Spreading water shortages and crop-withering heat waves are shrinking grain harvests in more and more countries, making it difficult for the world’s farmers to feed 70 million more people each year. The risk is that tightening food supplies could drive up food prices, destabilizing governments in low-income grain-importing countries and disrupting global economic progress. Future security, Brown says, now depends on raising water productivity, stabilizing climate by moving beyond fossil fuels, and stabilizing population by filling the family planning gap and educating young people everywhere.

In Water, esteemed journalist Steven Solomon describes a terrifying—and all too real—world in which access to fresh water has replaced oil as the primary cause of global conflicts that increasingly emanate from drought-ridden, overpopulated areas of the world. Meticulously researched and undeniably prescient, Water is a stunningly clear-eyed action statement on what Robert F Kennedy, Jr. calls “the biggest environmental and political challenge of our time.”