We learn that the impact of farming on greenhouse-gas levels, thousands of years before the industrial revolution, kept our planet notably warmer than if natural climate cycles had prevailed--quite possibly forestalling a new ice age.Plows, Plagues, and Petroleum is the first book to trace the full historical sweep of human interaction with Earth's climate. Ruddiman takes us through three broad stages of human history: when nature was in control; when humans began to take control, discovering agriculture and affecting climate through carbon dioxide and methane emissions; and, finally, the more recent human impact on climate change. Along the way he raises the fascinating possibility that plagues, by depleting human populations, also affected reforestation and thus climate--as suggested by dips in greenhouse gases when major pandemics have occurred. The book concludes by looking to the future and critiquing the impact of special interest money on the global warming debate.Eminently readable and far-reaching in argument, Plows, Plagues, and Petroleum shows us that even as civilization developed, we were already changing the climate in which we lived.

    Instead, Barber proposes Americans should move to the 'third plate,' a cuisine rooted in seasonal productivity, natural livestock rhythms, whole-grains, and small portions of free-range meat.

    But according to science, all of these statements are profoundly misleading.When it comes to climate change, the media, politicians, and other prominent voices have declared that “the science is settled.” In reality, the long game of telephone from research to reports to the popular media is corrupted by misunderstanding and misinformation. Core questions—about the way the climate is responding to our influence, and what the impacts will be—remain largely unanswered. The climate is changing, but the why and how aren’t as clear as you’ve probably been led to believe. Now, one of America’s most distinguished scientists is clearing away the fog to explain what science really says (and doesn’t say) about our changing climate. In Unsettled: What Climate Science Tells Us, What It Doesn't, and Why It Matters, Steven Koonin draws upon his decades of experience—including as a top science advisor to the Obama administration—to provide up-to-date insights and expert perspective free from political agendas. Fascinating, clear-headed, and full of surprises, this book gives readers the tools to both understand the climate issue and be savvier consumers of science media in general. Koonin takes readers behind the headlines to the more nuanced science itself, showing us where it comes from and guiding us through the implications of the evidence. He dispels popular myths and unveils little-known truths: despite a dramatic rise in greenhouse gas emissions, global temperatures actually decreased from 1940 to 1970. What’s more, the models we use to predict the future aren’t able to accurately describe the climate of the past, suggesting they are deeply flawed. Koonin also tackles society’s response to a changing climate, using data-driven analysis to explain why many proposed “solutions” would be ineffective, and discussing how alternatives like adaptation and, if necessary, geoengineering will ensure humanity continues to prosper. Unsettled is a reality check buoyed by hope, offering the truth about climate science that you aren’t getting elsewhere—what we know, what we don’t, and what it all means for our future.