In the current situation, there's a lot to be said for nuclear. I'm a lot less anti-nuclear than I was since I heard about the study on the Chernobyl survivors. It appears that low-level radiation isn't nearly as damaging as was once believed. That reduces the long-term damage of a nuclear accident. (given the probable number of nuclear plants, the occasional accident is statistically inevitable in spite of the good safety record of most plants)

I would back nuclear for the next 50 years in spite of the long-term waste problem. Global warming is now. If we don't solve that, then the problem of nuclear waste will be pretty academic in any case.