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Letters to Earth: Astronaut Don Pettit

Blood and Treasure

23 Mar 2012, 22:18 UTC
Blood and Treasure
(200 words excerpt, click title or image to see full post)

Gold, silk, and spices were the tangible treasures from past explorations. Today, the frontier of space offers treasures that are golden but not gold—secrets about the biochemistry of life, drawn from the bodies of astronauts.

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