The air is clearer, but the alarmists move on

Andrew Bolt, Herald Sun (Australia)

"Here we are 40 years later, the U.S. population has increased by more than 50%, traffic volume (miles driven) in the U.S. has increased 160%, and real GDP has increased 204%; and yet air quality in the U.S. is better than ever - nitrous dioxide, sulfur dioxide, carbon monoxide and lead have all decreased between 46% and 92% between 1980 and 2008 (see chart).