JOHN LAFORGE – â€œHereâ€™s the issue: Nuclear power right now is six percent of energy of the world. There are only 400 nuclear power plants. These are old nuclear power plants. But our scientists tell us [that] to have a minimum impact on climate change â€” which is the whole rationale for bringing this technology back â€” nuclear would have to be 20 percent of the energy mix to have the minimum, minimum impact on climate change â€” not six percent of the mix. An impossible goal. For one thing, the issue of water.