HKS Affiliated Authors

Professor of Public Policy, HKS; Harold Hitchings Burbank Professor of Political Economy, FAS


September 1, 2021, Opinion: "World leaders have accepted the warnings of scientists that global temperatures must increase by no more than 1.5 or 2 degrees Celsius to avoid severe damage to the Earth’s ecosystems and to human health and welfare. According to recent surveys, the general public increasingly agrees on the need for climate action.  As a result, many countries and some subnational entities have set ambitious targets for reducing greenhouse gas emissions. This past spring, the United Kingdom adopted a target of 78 percent emissions reductions by 2035, relative to 1990 levels. In the United States, the Biden administration announced a (nonbinding) goal of reducing net greenhouse gas emissions by 50–52 percent by 2030, relative to 2005. At the subnational level, several US states, including California, Colorado, Massachusetts, and New York, have legislated targets to approach or reach net zero emissions by 2050."

HKS Author - James Stock