Dive into an in-depth exploration of global climate change, and see how both natural and human activity have played a role in our changing climate. Learn how climate data is collected, understand the greenhouse effect and discover some unexpected sources of greenhouse gases. Consider experts views on the potential effects of global warming, from relatively mild changes in the weather to more extreme scenarios.

Teacher's guide also available under Additional info tag.

1 videodisc, 1 teacher's guide ; Special features: Discussion questions and activities, chapter select. Optional English and Spanish language tracks