Unfortunately, nuclear is just too far away from being a popular option for it to be considered by politicians, policy-makers, or anyone else that makes important enough decisions. Politicians will continue to silently approve the creation of new nuclear centrals (because they know we need them) but won't publicly push for them. Public opinion has been biased so much against nuclear that no one of those people sees a benefit _for themselves_ to solve the environmental crisis with nuclear.
Which brings me to the core point of this post: a lot of people care about the environment, and would like to help as much as they can, learning what's best to pursue. But politicians, policy-makers, and public personalities in general are not among the ones that really want to help the environment. For them, being an environmentalist is just a _mean_ to capture some votes, some money, some power. _That_ is what the seek. Paradoxically, I think they will attempt to delay the solution to the problem as much as they can, because that would mean they lose their power.