The U.S. Department of Defense believes in climate change:

DoD recognizes the reality of climate change and the significant risk it poses to U.S. interests globally. The National Security Strategy, issued in February 2015, is clear that climate change is an urgent and growing threat to our national security, contributing to increased natural disasters, refugee flows, and conflicts over basic resources such as food and water.1 These impacts are already occurring, and the scope, scale, and intensity of these impacts are projected to increase over time.

Will the U.S. public finally be ready to just laugh science-denying Presidential candidates off the stage next year?