Containment

​How can we contain some of the deadliest, most long-lasting substances ever produced? Toxic remnants from the Cold War remain in millions of gallons of highly radioactive sludge, thousands of acres of radioactive land, tens of thousands of unused hot buildings, and some slowly spreading deltas of contaminated groundwater. Governments around the world, desperate to protect future generations, have begun imagining society 10,000 years from now in order to create warning monuments that will speak across time to mark waste repositories.