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The Atlas Obscura Podcast · Wednesday, September 23, 2026

Seed Banking Expert Sephra Alexander Warns of Food Security Risks

Sephra Alexander, a renowned seed conservationist, highlights the critical loss of crop diversity, stating that approximately 75% of the world's crop diversity vanished between 1900 and 2000. She warns that relying on a limited number of crop varieties makes global food security dangerously vulnerable to disease and environmental changes.

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The tape

2 quotes
“According to the FAO, the United Nations Food and Agriculture Organization, roughly 75% of the world's crop diversity was lost between the year 1900 and 2000.”
“A monoculture is a really dangerous place to be for food security because if something happens that that exact strain can survive, then you have total crop failure.”
Heard on The Atlas Obscura Podcast — “The Seed Huntress”, published Wednesday, September 23, 2026. Heardvine summarizes and quotes with attribution and timestamps, and links to the original everywhere.
Transcribed via Gemini audio transcription · $0.04
Seed Banking Expert Sephra Alexander Warns of Food Security Risks — Heardvine