Eli Kintisch is a reporter for Science magazine, and has also written for Slate, Discover, MIT Technology Review and The New Republic. His reporting on geoengineering has included stories on Bill Gates funding planet-hacking research, DARPA exploring the idea, and a week-long historic meeting in 2010 to begin to draft voluntary rules on the concept. His new book, Hack the Planet, taps such first-hand experiences to draw a thorough portrait of this emerging field.