Learn how Earth’s climate results from the ways that energy enters, circulates within, and flows out of the Earth system. Explore the flows of energy in regional locations and then at the global level to understand how the increased greenhouse effect causes global warming.

Background Essay, Discussion Questions, & Teaching Tips [PDF]

An introductory interactive (Carbon Dioxide and the Carbon Cycle) explains the factors leading to an increased greenhouse effect. The concluding interactive in this series (Impacts of Climate Change in the Pacific Region) illustrates impacts of climate change and adaptation strategies for ecosystems and human systems.

For the interactive, visit PBS Learning Media.