Nina Martin was ProPublica’s sex and gender reporter, with a special interest in women's health and racial equity. Her "Lost Mothers" project with NPR, examining maternal mortality in the U.S., led to sweeping change to maternal health policy at the state and federal levels; it also won numerous awards, including the 2018 Goldsmith Prize for Investigative Reporting, a Keck Futures Initiative award from the National Academies of Science, George Polk and George Foster Peabody awards, and was a finalist for the Pulitzer Prize for Explanatory Reporting.

Martin’s other work at ProPublica focused on the criminalization of drug use in pregnancy, the role of religion in health care, and racial and gender disparities in COVID-19 deaths.

Previously, she was the articles editor and executive editor at San Francisco magazine and held staff positions at the Baltimore Sun, the Washington Post, the International Herald Tribune, and Health and BabyCenter magazines. Martin has a B.A. in public policy from Princeton and an MSJ from Northwestern's Medill School of Journalism.