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# The Surprising Power of Sex in Evolution
- URL: https://www.cascadepbs.org/show/its-okay-be-smart/episode/the-surprising-power-of-sex-in-evolution-6aj0rm/
- Published: 2024-05-29T13:45:23.000Z
- Updated: 2025-08-20T09:55:53.000Z
- Description: Have you heard about Charles Darwin's lesser-know theory of evolution: sexual selection?
- Author: Cascade PBS Staff
- Tags: Be Smart, Season 12, Episode 7, #ZZZ_Episode_aaec3529-c552-40c5-8a8f-f990aefde2cf, #episode, #ZZZ_Show_dc38a6e9-266e-43c1-b647-45e7445fad27, #v1.16

We all know Charles Darwin's theory of evolution, right? Natural selection? But what about his lesser-know theory of evolution: sexual selection. Let’s talk about how animals like peacocks, whose eye-catching physical traits make them evolutionarily stronger, even though their flashy looks make them more vulnerable to predators. Hint: it’s all about the chemistry.