How Los Angeles Cleaned Up the World’s Air Pollution

How Los Angeles Cleaned Up the World’s Air Pollution

From Shift Key with Robinson Meyer by Heatmap News

May 22, 2026 · 49 min · Season 3 · Episode 50

About this episode

The episode discusses how Los Angeles successfully cleaned up its air pollution and its significance for global environmental efforts.

We live in a time of unheralded environmental victories. Dolphins and whales swim in New York and San Francisco harbors. Lead has been eliminated globally in gasoline for cars and trucks. And Southern California has cleaned up its air. That last one is more important than you might think. On today’s episode of Shift Key, Rob is joined by Ann Carlson, a professor of environmental law at UCLA and the former acting head of the National Highway Traffic Safety Administration. She's also the author of a new book, Smog and Sunshine: The Surprising Story of How Los Angeles Cleaned Up Its Air , which was released last month by the University of California Press. Ann and Rob discuss why cleaning up LA’s air was so important to cleaning up the world’s air. They chat about why LA initially misdiagnosed the causes of its terrible air pollution, how it got them right, and what we can learn from the city’s eventual inspiring success.  Shift Key is hosted by Robinson Meyer, the founding executive editor of Heatmap News. You can find a full transcript of the episode here . Mentioned: Ann Carlson’s new book: Smog and Sunshine: The Surprising Story of How Los Angeles Cleaned Up Its Air -- This…

People in this episode

Host: Robinson Meyer

Guest: Ann Carlson

Topics covered

  • environmental victories
  • air pollution
  • Los Angeles
  • clean energy
  • public health

Keywords

  • Los Angeles
  • air pollution
  • environmental law
  • Ann Carlson
  • clean energy
  • public health
  • Smog and Sunshine

Mentioned in this episode

Organizations: UCLA, National Highway Traffic Safety Administration, University of California Press, Heatmap News

Books & works: Smog and Sunshine: The Surprising Story of How Los Angeles Cleaned Up Its Air

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