By Natural Philosopher Michael Alan Prestwood
By Natural Philosopher Michael Alan Prestwood
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From Year 0 (BCE/CE): -8000
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Phenotype Variation: Blue Eyes

Phenotype Variation: Blue Eyes

Blue eyes emerging stands out as a striking example of a genetic mutation that spread across populations. Traced back to a single individual living between 6,000 and 8,000 BCE in the region near the Black Sea. The mutation involved is a specific change in the OCA2 gene, which alters the way melanin is produced in the iris. Originally, all humans had brown eyes, but this mutation led to the reduction of melanin in the iris, resulting in blue eyes.

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WWB Season 7 — Returning 2026!

I’m taking this time to catch up with the paired videos for recent WWB editions, and to restructure the WWB into seasions of 10 weeks: four 1-Minute Hot Topics. Each week featureing a tidbit in science, philosophy, critical, thinking, and history. Follow the TST YouTube channel to catch all new videos. –Mike

Weekly Wisdom Builder 
Season 6: Cognition & Ideas
Jan 1 – Feb 26
December 3, 2025 Edition
February 26, 2025 Edition
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