The Habitable Planet: A Systems Approach to Environmental Science is a self-paced, one-hour (20 renewal credits) course for middle and high school teachers designed around Annenberg/CPB Professional Development Workshops. The course will assist teachers of biology, chemistry and Earth science in providing engaging content for their classes. The course consists of 13 half-hour video units and begins with an overview of the Earth's systems; geophysical, atmospheric, oceanic, and ecosystems as they exist independently of human influence. Following this introduction, the course explores the impact that human activities have on the different natural systems. Topics include human population growth and resource use, increasing competition for fresh water and climate change. Each program features two case studies following top scientists in the field.