“The movements of the air and water,” wrote French mathematician Joseph Fourier in 1824, “the extent of the oceans, the elevation and form of the surface, the effects of human industry, and all the accidental changes of the earth’s surface modify the temperature of each climate.”

Nearly forty years ago, the Coordination and Planning Division of Exxon Research and Engineering conducted a technical review of how fossil fuels influence climate. The study, which was distributed to Exxon’s top management, advocated for “major reductions in fossil-fuel consumption.” Unless that happened, the study concluded, “there are some potentially catastrophic events that must be considered. Once the effects are measurable, they might not be reversible.”

“There is a physical basis for all meteorological phenomena,” wrote the founder of the National Weather Service in 1901. “There are laws of mechanics and heat that apply to the atmosphere, and as fast as we acquire the ability to discover these and reason out their consequences, we shall perceive that law and order prevail in all the complex phenomena of the weather and the climate.”