Looks like the great climate-change unraveling came none too soon. Three states last week filed papers challenging the Environmental Protection Agency's scheme to use global-warming fears to seize sweeping power over much of the US economy. Officials in Texas, Virginia and Alabama charge that recent revelations challenging the scientific "consensus" that humans are causing catastrophic warming also undermine the EPA's decision to regulate greenhouse gasses as a pollutant -- which would give it inordinate power over nearly every industry in the country.