In the 1990s, there was a failed experiment in the Arizona desert called Biosphere 2. The idea was to create a self-sustaining orb where pretend astronauts of the future could live without contact with the real world for at least a year. They would grow their food, slaughter their own animals, and breathe their own air. If they were successful, they might be able to plop the orb on Mars to ensure the future of humanity after climate change destroyed the planet. It turned out to be a disaster. They ran out of food. They ran out of oxygen and...