The Arab Region Atlas of Our Changing Environment documents environmental change in the Arab region over the past several decades. It uses state-of-the-art space borne and aerial images, maps, graphics, and photographs along with informative narratives to highlight natural and human-caused landscape changes in the 22 League of Arab States member countries. Earth observation (EO) technologies, which include airborne and satellite sensing systems, play important roles in the assessment and management of natural resources. Advanced EO technologies have improved our ability to detect, evaluate, map and monitor change at the land surface, and is now essential for assessing, predicting and adapting to climate change. The hundreds of compelling images in this atlas clearly depict landscape-level changes over time and highlight the challenges facing the region. The ability to observe large-scale phenomena to detect gradual environmental change enables us to assess the global impact of human activity and develop methods to ensure a more sustainable future.