Introduction -- Stopping climate change. What is climate change? / Enviropedia ; How NASA defines and studies climate change / Dan Stillman and Denise Miller ; Climate change threatens crop yield / Department for Business, Energy & Industrial Strategy ; Climate change has increased the intensity and frequency of severe weather events / Union of Concerned Scientists ; Rising temperatures encourage the spread of disease / Michaeleen Doucleff ; Coordinated efforts to mitigate climate change are lacking / Ken Caldeira and David W. Keith -- Current geoengineering theories. Solar radiation management involves both risks and benefits / M. Granger Morgan and Katharine Ricke ; Rushing to implement SRM would be unethical / Genevieve Wanucha ; CO₂ removal technology still years away / Bobby Magill ; We should proceed with solar geoengineering -- cautiously / Garth Heutel -- Why a global effort is needed. The whole world must cooperate when battling climate change / Jennifer Morgan ; Results of past international environmental agreements / Council on Foreign Relations ; Younger people are the future / Dana Nuccitelli ; Climate change requires both global and local problem solving / Mike Muller ; Possible negative effects of geoengineering must be considered before it's implemented / Jane A. Flegal and Andrew Maynard ; Understanding why people support some mathods of geoengineering over others / Thomas Bateman and Kieran O'Connor -- Looking to the future. What does mitigation mean? / Henry D. Jacoby and Anthony C. Janetos ; The Paris Agreement is a key to the solution / David Waskow and Jennifer Morgan ; People are more comfortable supporting "natural" forms of geoengineering / Anita Talberg and Tim Flannery ; Geoengineering is everyone's business / Rob Bellamy ; The potential benefits of geoengineering are too great to not cooperate / David A. Dana.