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Biosphere 2’s latest mission: Learning how life first emerged on Earth – and how to make barren worlds habitable

  • Written by Scott Saleska, Professor of Ecology & Evolutionary Biology, University of Arizona
Biosphere 2’s latest mission: Learning how life first emerged on Earth – and how to make barren worlds habitableBiosphere 2 is a research facility located near Tucson, Ariz.Katja Schulz/Flickr, CC BY

From a distance, Biosphere 2 emerges from the cacti and creosote of the Sonoran desert like a gleaming oasis, a colony of glass and bright white structures. Despite being just outside Tucson, Arizona, it looks almost like a colony on another planet.

When one of...

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