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July 29, 2025 22 mins
The Trump administration is trying to overturn the EPA's endangerment finding, which determined that greenhouse gas emissions can be regulated under the Clean Air Act. Lisa Heinzerling, former senior climate policy counsel to the EPA administrator, joins us to discuss what this could mean for the U.S. government's efforts to fight climate change. Then, some of the homes still standing after fires tore through Southern California earlier this year are too toxic to live in. We speak with two Altadena homeowners about their experiences. And, the semicolon has been described as a "graceful pause" in writing. But this graceful punctuation mark is being forgotten. The Washington Post's Mark Lasswell talks about what the semicolon is for and what it means that it's fading away.

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