For over 75 years, the United States has been a global leader in climate change research. In the 1950s, scientists at the University of California showed that carbon dioxide concentrations in the atmosphere were increasing and established the first long-term CO2 monitoring system, while Norman Phillips at the Institute for Advanced Studies developed the first computer model of the global climate . The U.S. soon launched three of the world’s top climate modeling centers: the National Oceanic and