Nanomaterials describe, in principle, materials of which a single unit is sized (in at least one dimension) between 1 to 1000 nanometres (10−9 meter) but usually is 1 to 100 nm (the usual definition of nanoscale).
Under the auspices of an EU-funded project, researchers are working on ways to dispose of nuclear waste underground and seal it off with specialised plugs. If the project succeeds, the first permanent geological repositories could be operating in Europe by 2025.
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