On Today's Podcast

Why does fashion repeat in 20-year cycles? Math has the answer

A mathematician analyzed 150 years of women’s fashion to understand 20-year trend cycles, and how “optimal distinctiveness” drives change.

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May 15, 2026

In the microgravity of space, tumors can triple in size in just 10 days. That could be a boon for cancer research, and a risk for astronauts. Plus, why are appliances playing elaborate tunes, and where do they come from? And, beavers and humans tend to clash over landscape management. Pixar's “Hoppers” captures the struggle, and Oregon proves coexistence is possible.

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Video

Bamboo Bicycles Roll Out

To be bike-ready, the bamboo must be cooked in an oven, stripped, and sealed. We visited the workshop of Valid Cycles in Woodinville, Washington, to see how the bikes are made.

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