A comprehensive, open access book on smoke from wildland fires across the U.S. is now available. Wildland Fire Smoke in the United States: A Scientific Assessment synthesizes the physical, chemical, biological, social, and policy issues critical to mitigating the impacts of smoke from wildland fires. Seventy researchers, land managers, and other experts co-authored the book. More than 20 USDA Forest Service scientists are co-authors, along with collaborators from federal agencies, non-governmental organizations, states, and universities. “Wildland fires are a major source of gases and aerosols, and a thorough understanding of fire emissions is essential for addressing the societal and climatic consequences of fire and smoke,” says Dr. Toral Patel-Weynand, Southern Research Station Director and one of the book’s editors. “This knowledge is increasingly important, as a warmer climate is contributing to more fires and more smoke exposure.”