Some long-lived radionuclides require isolation for very extended periods, but the hazard does not remain constant: it decreases with radioactive decay and depends on chemical form, concentration, and the possibility of exposure. Geological disposal solutions are designed precisely to isolate high-activity waste over long timescales through multiple barriers. Saying only 'hundreds of thousands of years' without explaining decay and isolation creates a distorted perception.
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21.
Does nuclear waste remain dangerous for hundreds of thousands of years?
Partially true, but often misleading.
