A lot of these men and women are wonderful leaders in the evangelical community, and I respect their right to be heard on issues unrelated to their expertise. Every American has that right. (But) any fair reading of the science today, while global warming has taken place, it is not yet clear that it is being driven by human activity. But I’m trying to read as much as I can. And my mom used to say ‘better safe than sorry,’ so I am glad the energy bill authorized construction of a number of nuclear power plants in this country, which represents electric-generating facilities that don’t produce so-called greenhouse gases. … It seems to me that this issue has such a significant ability to have an enormous drain on our economy and on our national economic vitality that we should simply let the science drive it.