For oil industry, clean air fight was dress rehearsal for climate denial
When the smog plaguing Los Angeles reached distressing levels in the early 1950s, the city hired Arie Haagen-Smit to study the cause. Not only was Haagen-Smit a scientist specializing in airborne microscopic chemicals, he was also angry about the state of the city’s air. His work swiftly determined that the culprit was oil.