Now all we have to do is turn it into a commercially viable system.
Seriously, as much as I want fusion to be used as soon as possible, it looks like any practical implementations of it are millenia away. By then it'll simply be too late for the planet. Of course, if we put as much R&D into fusion research as we're spending on the war in Iraq we might have had something already. In the meantime I'm OK with fission power. Despite its drawbacks, it's much better than any alternative suggested thus far.