Just a bit of context for non-Italians:
> It failed with 94% of No votes.
Referendums in Italy have weird rules. They may only be called to repeal existing laws. In this case, the then-standing Berlusconi IV cabinet had approved a new nuclear plan, and a referendum was called to abolish it. A referendum is successful if both the repeal votes are more and the turnout is more than 50%. So if you don't want to repeal the law, you just don't go to the polls at all.
This is just to say that when looking at Italian referendums the important number is not the Yes/No valid votes but the turnout, which in this case was 55% or something like that IIRC.
I'd agree that the public opinion is still anti-nuclear, but it's more 55-45 than 95-5.