EPA adjusts a smog standard to White House preference

In December 2005, Stephen Johnson dunked himself in hot water. Johnson, the administrator of the U.S. Environmental Protection Agency (EPA), decided to discard advice from a scientific advisory committee when he set a major air-quality standard for soot. Scientists and environmental groups were outraged. This time Johnson did it again with ozone, the main component of smog and the hand of the White House was plain to see.