> Commercial fusion power with deuterium would solve a whole bunch of problems at once Would it? You're still using "fossil fuel" which means that you're heati

> Commercial fusion power with deuterium would solve a whole bunch of problems at once Would it? You're still using "fossil fuel" which means that you're heating up the planet... The only sustainable solution is solar, either on Earth, or in space in front of Earth (so that you're not introducing extra energy to Earth).