Develop four on-line, distance-delivered, scientifically and pedagogically relevant educational modules to improve climate and Earth Systems literacy among middle-level to high school teachers. The four modules will incorporate resources readily available from eight NASA-sponsored educational programs to focus on essential principles of climate science. Over the two-year period of the grant, we expect to increase the climate literacy of a minimum of 60 middle-level to high school educators who will, in turn, advance the cause of climate literacy among at least 3000 students. Each educator will be responsible for the development of at least one educational unit that will be disseminated to educators across country through a variety of mechanisms, including MYNASADATA. Through the action research component of the curriculum, the 60 teachers and their students will create action in their own communities to address the challenges of climate change.