An interdisciplinary and quantitative account of human claims on the biosphere's stores of living matter, from prehistoric hunting to modern energy production. 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. Smil examines all harvests—from prehistoric man's hunting of megafauna to modern crop production—and all uses of harvested biomass, including energy, food, and raw materials. Without harvesting of the biomass, Smil points out, there would be no story of human evolution and advancing civilization; but at the same time, the increasing extent and intensity of present-day biomass harvests are changing the very foundations of civilization's well-being. In his detailed and comprehensive account, Smil presents the best possible quantifications of past and current global losses in order to assess the evolution and extent of biomass harvests. Drawing on the latest work in disciplines ranging from anthropology to environmental science, Smil offers a valuable long-term, planet-wide perspective on human-caused environmental change.

For the first time in Earth's history, our planet is experiencing a confluence of rapidly accelerating changes prompted by one species: humans. Climate change is only the most visible of the modifications we've made--up until this point, inadvertently--to the planet. And our current behavior threatens not only our own future but that of countless other creatures. By comparing Earth's story to those of other planets, astrobiologist David Grinspoon shows what a strange and novel development it is for a species to evolve to build machines, and ultimately, global societies with world-shaping influence. Without minimizing the challenges of the next century, Grinspoon suggests that our present moment is not only one of peril, but also great potential, especially when viewed from a 10,000-year perspective. Our species has surmounted the threat of extinction before, thanks to our innate ingenuity and ability to adapt, and there's every reason to believe we can do so again. Our challenge now is to awaken to our role as a force of planetary change, and to grow into this task. We must become graceful planetary engineers, conscious shapers of our environment and caretakers of Earth's biosphere. This is a perspective that begs us to ask not just what future do we want to avoid, but what do we seek to build? What kind of world do we want? Are humans the worst thing or the best thing to ever happen to our planet? Today we stand at a pivotal juncture, and the answer will depend on the choices we make.

A leading researcher on human evolution proposes a new and controversial theory of how our species came to be In this groundbreaking and engaging work of science, world-renowned paleoanthropologist Chris Stringer sets out a new theory of humanity's origin, challenging both the multiregionalists (who hold that modern humans developed from ancient ancestors in different parts of the world) and his own "out of Africa" theory, which maintains that humans emerged rapidly in one small part of Africa and then spread to replace all other humans within and outside the continent. Stringer's new theory, based on archeological and genetic evidence, holds that distinct humans coexisted and competed across the African continent—exchanging genes, tools, and behavioral strategies. Stringer draws on analyses of old and new fossils from around the world, DNA studies of Neanderthals (using the full genome map) and other species, and recent archeological digs to unveil his new theory. He shows how the most sensational recent fossil findings fit with his model, and he questions previous concepts (including his own) of modernity and how it evolved. Lone Survivors will be the definitive account of who and what we were, and will change perceptions about our origins and about what it means to be human.

Explores the causes and implications of the Anthropocene, or Age of Humans, from multiple points of view including anthropological, scientific, social, artistic, and economic. Although we arrived only recently in Earth's timeline, humans are driving major changes to the planet's ecosystems. Even now, the basic requirements for human life--air, water, shelter, food, nature, and culture--are rapidly transforming the planet as billions of people compete for resources. These changes have become so noticeable on a global scale that scientists believe we are living in a new chapter in Earth's story: the Anthropocene, or Age of Humans. Living in the Anthropocene: Earth in the Age of Humans is a vital look at this era. The book contextualizes the Anthropocene by presenting paleontological, historical, and contemporary views of various human effects on Earth. It discusses environmental and biological systems that have been changed and affected; the causes of the Anthropocene, such as agricultural spread, pollution, and urbanization; how societies are responding and adapting to these changes; how these changes have been represented in art, film, television, and literature; and finally, offers a look toward the future of our environment and our own lives.

As an investigative journalist, Monbiot found a mission in his ecological boredom, that of learning what it might take to impose a greater state of harmony between himself and nature. He was not one to romanticize undisturbed, primal landscapes, but rather in his attempts to satisfy his cravings for a richer, more authentic life, he came stumbled into the world of restoration and rewilding. When these concepts were first introduced in 2011, very recently, they focused on releasing captive animals into the wild. Soon the definition expanded to describe the reintroduction of animal and plant species to habitats from which they had been excised. Some people began using it to mean the rehabilitation not just of particular species, but of entire ecosystems: a restoration of wilderness. Rewilding recognizes that nature consists not just of a collection of species but also of their ever-shifting relationships with each other and with the physical environment. Ecologists have shown how the dynamics within communities are affected by even the seemingly minor changes in species assemblages. Predators and large herbivores have transformed entire landscapes, from the nature of the soil to the flow of rivers, the chemistry of the oceans, and the composition of the atmosphere. The complexity of earth systems is seemingly boundless."

A penetrating take on how our planet would respond without the relentless pressure of the human presence