I noticed there were several ways for trying to solve that problem : 1) secretely leave them somewhere (seas,...) 2) try to make extra places for them 3) retreat them (superphenix,aso...) Does somebody know what happen if those highly radioactive waste are put into a long-time wokring fusion power plant, with temp. > 100 mio. K ?? maybe if this is not enough energy to fusion very heavy nuclei, they will follow a kind of thermal desintegration into maybe other much more lighter elements ??