A course for high school teachers and undergraduate students in environmental science. This course begins with an overview of the Earth's systems-- Geophysical, atmospheric, ocanic, and ecosystems-- as they exist independently of human influence. Following this introduction, the course explores the effect that human activities have on the different natural systems. Topics include human population growth and resource use, incdreasing competition for fresh water, and climate change. Each of the 13 programs features two case studies following top scientists in the filed.. Each episode is a 1/2 hour in length.