WELL, WATER VAPOR IS A GREENHOUSE GAS:

The tax-exempt Environmental Integrity Project in Washington, D.C., issued its annual list of the 50 dirtiest power plants in America. This is illustrated by a photo showing steam — water vapor — escaping from a cooling tower. Sigh.

Power plant emissions nationally are down even as electric generation is up. The report showed. Nitrogen oxide emissions fell 28% between 2002 and 2006. Sulfur dioxide emissions fell 8%. Carbon dioxide emissions — the stuff you exhale — rose by 3%.

Electric production rose about 8% in that period, using the 2% annual increase in electric use, as the same agency “Dirty Kilowatts” cited.

But I agree this is pretty lame.

UPDATE: When down is up.