The remains of former life, the fossils we have used as fuels, should stay in the ground. Respect for the deep past would enable a more prolonged future. If we built fusion power plants, we would be imitating solar energy by lighting tiny stars on Earth. Accompanied by other renewables, that would be a graceful solution, bringing both freedom and survival. If we act to bring fusion to Earth, we will be applying some of our knowledge of the universe and thereby changing it. The universe is already a bit different, since we have built fusion devices on Earth that generate more energy than they
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