Nuclear power makes a great carbon-free energy source except for that little matter of radioactive waste, like at the mostly decommissioned Hanford Site.
[Washington Governor] Inslee said Secretary Ernest Moniz informed him June 20 that the department “discovered what appears to be an elevated contamination level reading in the leak detection pit outside and adjacent to the Hanford double-shell tank AY-10.” Inslee characterized this as “most disturbing news for Washington.”