PHI’s Center for Climate Change and Health hosts the U.S. Climate and Health Alliance, which brings together public health and health care workers from across the U.S. to amplify the health voice on what The Lancet  has called “the biggest global health threat of the 21st century.” Alliance members will come together to share information, identify ways to engage and work to ensure that health and health equity are at the forefront of all U.S. programs and policies to address climate change.