: The French nuclear waste agency Andra is currently working on what may become the world’s first underground repository for nuclear waste. The site consists of a series of tunnels carved out of 160-million-year-old rock about one-half kilometer below the small town of Bure in northeast France. Huge bore holes drilled into the walls would hold capsules of the radioactive material for tens of thousands of years. The agency is testing the geological soundness of the site and various waste-containment strategies. If all goes according to plan, Andra will open an industrial-scale facility by 2025.