Space
First direct evidence of ancient Mars’s oxygen-rich atmosphere
Suspicions that Mars once had oxygen-rich air are backed by the NASA Curiosity rover's find of manganese oxide in surface rocks
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Suspicions that Mars once had oxygen-rich air are backed by the NASA Curiosity rover's find of manganese oxide in surface rocks
Instead of taking a full toolkit into space, astronauts could take genetically engineered bacteria to make origami plastic and build the tools themselves