The Svalbard Global Seed Vault–dubbed the “Noah’s ark” of plants–is carved out of a sandstone mountainside on a Norwegian island only about 600 miles from the North Pole. The vault is designed to keep crop seeds safe and protect the … Continue reading

Hear the renowned chemist Percy Julian himself in these audio excerpts from a 1965 speech. Produced by WGBH/Nova.

Franklin Chang-Díaz, veteran of seven space missions, talks about how he dealt with the obstacles he faced to become the first Latin-American in orbit, what it’s like to fly in space, and more. Produced by WGBH/Nova.

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