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Introducing behavioral observation, this DVD demonstrates instantaneous sampling, one-zero sampling, and continuous recording and emphasizes the importance of choosing representative samples when studying behavior.

This DVD examines the ways in which U.S. trade rules, farm subsidies, and regulations affect such issues as global warming, healthcare, and homeland security. It features Michael Pollan of U.C. Berkeley, who discusses his approach to often-overlooked questions in food policy. It also visits the East New York Farmers Market to explore a viable alternative to the common agribusiness model.

This DVD explains how polymers are synthesized out of monomers through dehydration. It also looks at the role of carbohydrates, examines the functions of lipids, explains how proteins function as enzymes, hormones, and structural materials, and shows how nucleic acids store information.

This program explores the variety of life forms on earth, ranging from the smallest bacteria cells to animals in all parts of the world. It addresses the biological processes at work in communities and ecosystems throughout the globe.