Any discussion of biodiversity and the web of life can be strengthened by an understanding of how living things are classified. Beginning with the work of Linnaeus, this two-part series introduces the taxonomic systems used by scientists to identify and categorize the Earth’s abundant life forms. Live footage, microscopic imaging, diagrams, definitions of key terms and concepts, and interviews with science professionals provide insights into the ongoing challenge to understand the diverse characteristics of living things. Correlates to the National Science Education Standards developed by the National Academies of Science and Project 2061 Benchmarks for Science Literacy from the American Association for the Advancement of Science. A Cambridge Educational Production. 2-part series, 27-28 minutes each.