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November 1, 2024

Running a marathon is a major physical feat. One expert answers listener questions about how it impacts the body and mind. Plus, the Clean Air Act gave the U.S. some of the world’s cleanest air. But with industrial zones and climate change, it's not protecting everyone. And, an author and naturalist discusses chicken intelligence and her experience raising a flock in New Hampshire.

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Help us choose the top Science Friday radio stories from our archive to air as part of our 33rd anniversary celebration.

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