A group of academics calling themselves The Skeptical Scientists examined abstracts of the 4,014 papers on climate change published in 2013 and found that 97.2 percent of scientists believe humans play a role in global warming. Today, however, social scientists, political scientists, and climate change communicators doubt that discussing this scientific consensus serves any purpose. With a majority of Americans—including our lawmakers—acknowledging climate change, it is no longer a debate over science; it has become a debate over politics, economics, and ethics. Among Democratic and Independent lawmakers, there is broad support for both public and private spending to address climate change through expanding renewable energy and reducing greenhouse gas emissions. Among Republicans, there’s not strong opposition; Republicans address the issue of climate change by not bringing it up. Moderate Republicans place climate change near the bottom of their platform, and conservative Republ...