Nuclear Waste

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TL;DR: Nuclear waste is a material whose atoms have destabilised. Certain types will far outlive our species, and we currently have nowhere it put it. Putting it in a place where it will not endanger future humans or ecosystems is an engineering problem for the ages.

Hundreds of thousands of years in the future, when even the pyramids have been ground to dust by wind, one human structure on Earth will remain. At least that’s the plan for Onkalo, a building under construction right now in Finland. If successful, it may be one of the final artifacts of human civilisation…

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