Dr. Gregory Wellenius, Associate Professor of Epidemiology at the Brown University School of Public Health and Director of Brown’s Center for Environmental Health and Technology, presented a brief summary of the documented associations between ambient temperatures and birth outcomes, with an emphasis on recent findings from his group on the association between temperature and markers of fetal growth and risk of preterm birth. Dr. Vaidyanathan, health scientist with the Centers for Disease Control and Prevention, discussed his publication Assessment of extreme heat and hospitalizations to inform early warning systems. This evaluation provides useful information for heat early warning system and action plan administrators regarding the temperature ranges at which health impacts are manifest, the morbidity outcomes most sensitive to heat, and alignment between alert thresholds and temperatures at which disease burden is most pronounced. Dr Eunice Lo, Research Associate for the Bristol Research Initiative for the Dynamic Global Environment (BRIDGE) at the University of Bristol, described her work modeling different global warming scenarios in 15 U.S. cities and the estimated heat related health benefits of employing stronger climate mitigation strategies in order to keep ambient temperatures below the 1.5°C threshold above preindustrial levels.