Extreme heat and its health impacts are on the rise. Annually, extreme heat already causes more deaths in the United States than all other weather-related causes combined, with effects most pronounced in urban areas. Reducing urban heat exposure is an equity issue, as low-income communities and communities of color are more likely to live in neighborhoods with older buildings, low tree cover, more heat-retaining surfaces, and limited access to coping mechanisms such as air conditioning. In this webinar, Edith de Guzman will introduce the efforts of the Los Angeles Urban Cooling Collaborative (LAUCC) — a multi-disciplinary, national partnership of researchers and practitioners working to understand and implement urban cooling strategies in Los Angeles. Dr. David Eisenman will discuss heat-health impacts on the human body and how choices made in urban environments may prevent heat-related illness and death. Dr. Larry Kalkstein will present methods and findings of a recently-completed LAUCC modeling study revealing how various tree cover and solar reflectance “prescriptions” in L.A. could delay warming impacts and reduce heat-related mortality, temperature, humidity, and oppressive air masses that lead to increased deaths, and how this work could have relevance elsewhere.