With extreme heat the leading cause of weather-related deaths, rising temperatures are a new public health crisis, affecting especially the most vulnerable groups in society. How can we ensure the long-term comfort and livability of communities — and safeguard against related climate disasters such as wildfires and droughts? In this panel, those working at the forefront of urban heat mitigation, in planning, design and landscape, share learnings from their urban cool-down efforts and what they are planning for next.