You can see in this one reason why the polluters of Arkansas — and their colleagues and toadies on the Arkansas Pollution Control and Ecology Commission, such as  commissioner and steelmaker Thomas Schueck — refuse to acknowledge that the greenhouse gas carbon dioxide is, well, a greenhouse gas. Defining it as a contaminant could lead to restrictions on poison-spewing coal-fired generating plants, such as the one proposed by one of the state’s significant natural areas in Hempstead County.

A judge in Georgia has halted construction of a coal-fired plant in that state — the first in Georgia in 20 years — because a permit from that state’s environmental protection agency put no limit on carbon dioxide emissions and other dangerous chemicals. The decision will be appealed. But the whole country is watching.