Can infant and fetal mortality in the United States be correlated with nuclear weapons tests? Professor Stern-glass offers data for a close correlation between a levelling off in the decline of the fetal and infant mortality rates in the high rainfall areas in 1951–52 and the onset of the Nevada nuclear weapons tests in the atmosphere. A similar correlation exists for the onset of hydrogen bomb tests in the Pacific in 1954, according to the data. Professor Sternglass is a member of the Department of Radiology and Division of Radiation Health, University of Pittsburgh.