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Digital Exhibits: Haagen-Smit in the smog

Haagen-Smit in the smog

Photo ID 1.15.2-28

Arie Jan Haagen-Smit, a Dutch-born organic chemist and specialist in plant growth hormones, first linked smog to automobile emissions in Los Angeles. He identified the chemical ozone and created a test for determining the intensity of smog. He was active in implementing measures for its abatement in California and nationwide. Photo from 1956.