California smog research pioneer Pitts dies at 93

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IRVINE, Calif. (AP) — James Pitts, a pioneering smog researcher whose work spurred California’s ground-breaking clean-air regulations, died Thursday at age 93, his wife said.

Pitts died in his sleep at his home in Irvine, according to his wife and fellow professor at the University of California, Irvine, Barbara Finlayson-Pitts.

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