I've noticed a lot of nuclear advocates talking about climate change but having a poor grasp of the actual issues involved. The aim isn't the unrealistic goal of going to zero emissions, it's to cut emissions such that carbon ppm stays below 450 (or 350, if we had acted sooner). If you look at serious comprehensive plans to fight climate change, nuclear doesn't play a big role for a variety of reasons (time to build, cost, production bottlenecks, etc.). Conservation usually plays a much bigger role (as do renewables).

People blame environmentalists, but nuclear fans acting like nuclear is the one and only silver bullet while ignoring much more important components hasn't helped the fight against climate change.