As long as shit like this happens, I consider it a big problem:

http://www.spiegel.de/international/europe/recycling-atomic-...

Not technically, but politically. Look at the demonstrations against castor transports in Germany.

Once Hanford's contaminated ground water reaches the Columbia River, it will render every place downstream uninhabitable. eg Portland OR.

I think that's a big problem.

I will support nuclear if you have a solid solution that will work for the waste for the island living populations of the world. Hawaii for example. If a good solution for the waste can be presented there, we can more effectively move forward. Looking just at large continental areas when solving the problem leaves some holes to fill. Not saying nuclear is bad, it does have a solid cost presentation and a low pollution foot print.

I mean, if the world switches largely to nuclear power, it’s probably fine if small populated islands that don’t have anywhere to store nuclear waste keep using whatever power source they’re using now (or switch to other clean energy sources if possible). There’s no reason to let the perfect get in the way of the better.