A pay gap between female and male employees at US federal science agencies decreased but persisted over 15 years, and the source of the disparity wasn’t the same across the board, according to a new study (Am. J. Sociol. 2019, DOI: 10.1086/705514). An academic research team looked at the pay and position of federal employees, including almost 2.8 million staff members at seven science agencies, from 1994 to 2008. All agencies saw a substantial decrease in the pay gap during that period. At the National Science Foundation (NSF), for example, women made 58 cents for every dollar men made in 1994. That had risen to 73 cents by 2007–8. When the researchers looked for the source of the pay gap, they found that it varied by agency. Physical science–focused agencies—the Department of Energy and National Oceanic and Atmospheric Administration—had the largest pay gaps between men and women working in the