"The analysis for "A Nuclear Solution to Climate Change?" is diminished by inclusion of the myth - popular in the United States - that efficient use of nuclear resources is a proliferation threat. Quite the contrary, destruction of weapons materials in spent nuclear fuel by their use for production of electricity in fast, so-called breeder reactors is an essential component of good non-proliferation practice. Depleted uranium at US enrichment plants, which was used by the Department of Energy to produce plutonium for weapons, would also be destroyed in fast reactors. The electricity produced from existing nuclear by-products would be equivalent to that needed by the US, at present use rates, for hundreds of years.