Geographers are social scientists who are interested in human activities as well as the physical environment. Human geography includes a wide range of topics, such as the study of languages, religions, customs, economics, and political...

Kim Preshoff explains how using a visual tool called a population pyramid helps policymakers and social scientists make sense of the statistics, using three different countries' pyramids as examples. [5:01]

The NOVA documentary, The Cannabis Question, explores the story of cannabis from the criminalization that has disproportionately harmed communities of color to the latest medical understanding of the plant. What risks does cannabis pose...