Bill Hare, a physicist and climate scientist, has become a scientific adviser for some of the nations on the front lines of climate change—poor countries with limited resources to adapt. His Berlin-based nonprofit, Climate Analytics, was established in 2008, with funding from the German government, to help provide scientific and technical advice about climate change to the poorest and most vulnerable developing countries.
Previously the climate policy director for Greenpeace International, he has attended all 21 annual meetings of the Conference of Parties—the global climate change summits begun after the 1992 Rio Earth Summit. In Paris, he is working with a number of poor and developing countries, including the Alliance of Small Island States and the Least Developed Countries Group. This interview has been edited for brevity and clarity.