Women are underrepresented and undervalued in science, technology, engineering, mathematics, and medicine (STEMM) fields - less likely to pursue careers or advance within these fields due to bias, harassment, pay gaps, unequal access and workloads, and fewer opportunities. The consequences of this manifest in labor shortages in STEMM, a lack of diversity, and lost talent and creativity. Promising Practices for Addressing the Underrepresentation of Women in Science, Engineering, and Medicine: Opening Doors, a policy report from the National Academies of Sciences, Engineering, and Medicine, seeks to address these issues by synthesizing and reviewing existing research on policies, practices, and programs for improving the recruitment, retention, and sustained advancement into leadership roles of women in STEMM fields. On the page linked above, visitors can read the report in full online or download a free PDF version, or navigate to the "Contents" tab for a detailed table of contents. The "Resources" tab includes highlighted content specifically for medical institutions and policy makers, as well as commissioned papers. The report's editors are Rita Colwell, Ashley Bear, and Alex Helman, with additional contributions from Policy and Global Affairs, the Committee on Women in Science, Engineering, and Medicine, and the Committee on Increasing the Number of Women in Science, Technology, Engineering, Mathematics, and Medicine.