[so_real]

From the article you posted:

"Today we stock containers of waste because currently scientists don't know how to reduce or eliminate the toxicity, but maybe in 100 years perhaps scientists will."

"Nuclear waste is an enormously difficult political problem which to date no country has solved. It is, in a sense, the Achilles heel of the nuclear industry. Could this issue strike down France's uniquely successful nuclear program? France's politicians and technocrats are in no doubt. If France is unable to solve this issue, says Mandil, then "I do not see how we can continue our nuclear program."

[Tribune7]

French technocrats had never thought that the waste issue would be much of a problem. From the beginning the French had been recycling their nuclear waste, reclaiming the plutonium and unused uranium and fabricating new fuel elements. This not only gave energy, it reduced the volume and longevity of French radioactive waste. The volume of the ultimate high-level waste was indeed very small: the contribution of a family of four using electricity for 20 years is a glass cylinder the size of a cigarette lighter.

That's a big step to solving the problem.