On Today's Podcast

Reconnecting with the night sky and reining in light pollution

Writer Craig Childs biked from the brightest sky to the darkest in our Book Club pick "The Wild Dark." Plus, the latest on light pollution.

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July 10, 2026

Two experts at the forefront of untangling the gut-brain connection explain its role in IBS, Parkinson’s, and depression. Plus, writer Craig Childs biked from the brightest sky to the darkest in our Book Club pick "The Wild Dark." And, while fog itself is not alive, researchers found that it can contain an ecosystem, including bacteria that eat pollutants.

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14:52

SciFri Celebrates π

This year holds an unusually special treat for enthusiasts of the constant π: March 14, 2015 approximates π not just to the usual three digits (3.14) but to five: 3.14.15.

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Segment

9:03

Dawn Arrives at Ceres

Mission director and chief engineer Marc Rayman gives an update on the Dawn mission, scheduled to arrive in orbit around dwarf planet Ceres this week.

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