Deep Sea Subduction Trench Burial of vitrified waste.
The inanity of the article's title kind of says it all.
This is an rochestrated piece of crap hiding out as science.
BTW, imho fusion actually ends up making more waste: the walls that will have to exist to absorb the radiation and convert it to heat primarily will become radioactive.
A good clean pebble bed system, along with a good breeder reactor program can digest bomb fuel, leave very little waste, and would work well into the millenium.
There could be some heat sink technologies based on the ocean's temperature that could be useful as well.
Of course if we had a billion or two people offplanet, that would help greatly.
Ed