Nuclear Power and Global Warming
There is a very simple test of this claim. Nuclear power is the one energy source that does not produce greenhouse gases and, using current technology, can be expanded over the next couple of decades to replace many, arguably almost all, uses of fossil fuel. So anyone who believes that the great threat facing us, the threat we should be willing to pay large costs to deal with, is global warming due to greenhouse gases should be strongly inclined to favor nuclear power.
On the other hand, someone who is trumpeting global warming because he likes the policies advocated to deal with it: public transportation instead of automobiles, "smart growth" instead of "urban sprawl," limits to population and the like, has two reasons to oppose nuclear power. The first is that the environmental movement has long regarded nuclear power as a quintessential evil. The second is that if nuclear power makes it possible for us to continue expanding our current lifestyle while avoiding the dangers of global warming, it eliminates the argument he wants to use to persuade us to reform. We get to continue sinning without being sent to (anthropogenic) hell.
I am sure there are people who are both seriously worried about global warming and in favor of nuclear power. But how many of them are there? How many high profile spokesmen or organizations have taken that position?