Terry Gross talks with Adam Cohen, author of "Imbeciles," about the American eugenics movement.
Authorities are investigating Kingman fires
Authorities in northwestern Arizona are investigating dozens of brush fires intentionally set in Kingman in the past few months. Investigators said 63 brush fires have been set in open fields along roadways. Arson investigators are seeking information on suspects in the cases.
The Kingman Fire Department is offering a reward up to $10,000 for information leading to the arrest and conviction of those responsible.