Climate change and the health effects stemming from extreme heat and longer, more intense wildfire seasons represent an existential threat to the public's health. This is an issue that has received little attention as climate scientists race to slow the rate of global warming. However, it cannot wait: from communities in Los Angeles to those on the other side of the world, people’s physical health, mental health and overall wellbeing are suffering now, and leading to early death. Join with the UCLA Center for Healthy Climate Solutions to put solutions to work, fill the research gaps with the best scientific data, train future leaders in this multi-disciplinary field, and inform decision makers to advance policy change to ensure health for all in an era of climate change.