Climate change is a global problem that will likely contribute to a wide range of local environmental changes. Even if society averts the most severe projected impacts of climate change through long term reductions in CO2 emissions; climate changes already underway will present challenges for sustaining livelihoods of communities around the world. Accordingly; adaptation will play a major role in addressing these human sustainability challenges. Decision makers need to understand which climate impacts are important in their region and what their options are for adapting well; to decide how money and resources should be allocated. The Global Adaptation Atlas is intended to enable this type of knowledge creation; sharing; and learning. As a web-based mapping application (in development); the Atlas will integrate interactive maps of the best-available science on climate impacts and the latest information on adaptation activities; provided free to the public.