Nuclear power is as clean as you’re going to get for a non-intermittent energy source. From Rosenberg at freemansperspective.com:
The phrase “clean energy” has emanated from official podiums, world over, in recent years. The implication, of course, is that the energy sources we’ve been using are filthy. That, however, is not the case. We already have and use clean energy. And it is far, far better than replacements the podiums expect us to suffer for.
We use clean energy every day, and it works exceedingly well. I think we should be happy about that.
I was confronted with this fact quite some years ago, while working on an alternative energy project. Here are the pounds of particulate matter (aka, dirt), produced when generating a billion BTUs (British Thermal Units, a measurement of heat):
Natural Gas 7
As you can see, we already have clean energy, in the form of natural gas and nuclear power. (Burning wood in a fireplace, by the way, dwarfs all the figures above.)