This animated spiral portrays the simulated changes in the global average monthly air temperature from 1850 through the present relative to 1850-1900, and then where they are projected to head if we do nothing to reduce emissions of carbon dioxide. (Source: Jay Alder, USGS)

The Trump administration has rolled back Obama-era climate change rules in an effort to save coal-fired electric power plants in the United States.

The action comes in the form of the “Affordable Clean Energy rule,” wh