The Center for Research on Environmental Decisions (CRED) at The Earth Institute, Columbia University, and ecoAmerica, a nonprofit that works to build public support for climate solutions, have been leaders in climate communication research. With this guide, we synthesize what others and we have learned about climate change communication over the years into a single useful tool. It is our hope that leaders and communicators will put the insights in this guide into practice, designing and sharing ever more effective communication and practices to motivate an era of climate engagement that pushes America—and the planet—to a tipping point for climate solutions.