[markvdb]

> You'll never get waste management below about 300 years with fission, because that's basically what you get from the fission products.

That's at least one and probably more like five wars over the reactor territory.

I'm mildly optimistic about fusion's potential...

[DennisP]

Bear in mind the decay is exponential, so most of the radioactivity is in the near term. There's no fissile, and by mass it's about 1% as much as we're getting now from conventional reactor spent fuel. Encase it in glass and bury it, and you're probably good.

I'm mildly optimistic about fusion as well. One big advantage is regulatory; fission reactors can be safe if you design them well, but fusion reactors can't do much damage even if they're terrible. The NRC has already decided on a much lighter regulatory regime for them.