Computing has been a central tool in the development of modern understanding in many fields of science, technology, engineering and math (STEM). Skills such as modeling, data visualization, and computational thinking are all necessary for building a diverse scientific workforce that will secure a strong future for the United States. As a result, NSF's STEM+Computing Partnership (STEM+C) program seeks to integrate the use of computational approaches in K-12 STEM teaching and learning. TERC, Inc., in collaboration with Northeastern University and the cambridge, Newton, and Lowell, Massachusetts Public School Districts, will develop and study an education program that integrates computing into middle school Earth systems science by interweaving computational skills development into science game design and science content learning. The project aims to develop skills among diverse groups of young people in two crucial fields central to national interest and safety.