The biggest radioactive spill in US history. As World War Two was ending, the growing nuclear arms race put the US in need of uranium. It turned to Navajo Nation, where the uranium mining industry thrived for four decades -- but left disease, pollution and the biggest radioactive spill in US history. That spill in Church Rock, New Mexico upended the lives of nearby residents, who had to grapple with toxic water, livestock and a lifetime of illnesses. Now, they are still waiting for it to be cleaned up. Note: The headline for this piece has been updated. Previous headline: The biggest radioactive spill in US history Have an idea for a story that we should investigate for Missing Chapter? Send it to us via this form! bit.ly/2RhjxMy Sign up for the Missing Chapter newsletter to stay up to date with the series: vox.com/missing-chapter Explore the full Missing Chapter playlist, including episodes, a creator Q&A, and more! youtube.com/playlist?list=PLJ8cM...