The mystery of how to dispose of radioactive waste has remained unsolved since the dawn of the nuclear power industry more than half a century ago. Temporary storage sites require humans to monitor their safety--a solution that doesn't work well when the material will remain dangerously radioactive for hundreds of thousands of years. Finland, however, has made substantial progress toward building a final home for its waste.
The world's first permanent disposal site for spent nuclear fuel is being built on Finland's western shore.