Will climate change doom humanity to an existence mimicking Dante's Inferno? Will nuclear proliferation threaten humanity with annihilation as depicted in Dr. Strangelove? An increasing number of pundits, policymakers and even environmentalists believe that nuclear energy can save us from massive death by climate change and will not lead to massive destruction by nuclear war. (Nuclear fuel making technologies can also be used to produce explosive material for nuclear weapons.) But as I wrote in a new Council on Foreign Relations report, Nuclear Energy: Balancing Benefits and Risks, this view oversells the contribution nuclear energy can make to strengthen energy security and reduce global warming while downplaying the dangers associated with this energy source.