Since its discovery, perspectives on radioactivity have changed drastically through time. In this piece, physicist Irka Hajdas takes a look into the nuclear past of Weldon Spring, Missouri.

How has the human relation to radioactivity changed since its discovery in the late nineteenth century? By examining the history of the radioactive disposal ground in Weldon Spring, Missouri, physicist Irka Hajdas traces the contentious and altering awareness around radioactivity in the United States.