From an interview in Salon:
Do you believe nuclear power has a role to play in America's energy future?
I understand the safety and security concerns with nuclear power and share many of them -- I live three miles away from a nuclear power plant. But nuclear power is an option to reduce global warming, which I don't believe we can afford to take off the menu of options, not when we rely on it for close to one-quarter of our power.
However, the nuclear waste generated is an environmental hazard that I'm deeply concerned about. While the temporary solution of storing waste in dry casks may be safe, we must find a resolution to long-term concerns. We must invest in R&D to develop safe and secure ways for permanent disposal that will protect our environment, our water supply and our country's national security. We are not alone in this pursuit, and as president I will join forces with our allies around the world facing the same problem.