Earth Transformed

William F. Ruddiman (University of Virginia)

  • ISBN-10: 1-4641-0776-9; ISBN-13: 978-1-4641-0776-4

It's a question that has engaged climate scientists for more than a decade: Not if human activity impacts the environment, but when did that impact start to be significant? Was it in the mid-18th century, as long believed, with the Industrial Revolution producing huge amounts in greenhouse gas emissions? Or did it actually begin thousands of years earlier, as a result of the discovery and spread of agricultural practices?