I think this is it: What is the backstop energy source?
The only options right now are nuclear, solar, hydro, geo, and of course fossil fuels like oil, natural gas and coal. Every one has pros and cons, which means this is great stuff for economic analysis. Will nuclear ever be safe? Will coal ever be clean? Will solar ever be cost effective? Is there something else on the horizon?
We know that we have to start addressing these questions, but we can't agree on how to do it.
Here's a link to an article discussing the results of a survey of consumer attitudes. Here's another poll on the same set of issues. Note the serious split between those that say "more" and those that say "less" for just about everything currently on the table. No wonder our politicians can't put together an energy policy... no matter what they advocate, around half the country will be opposed.