SciShow Kids: Our Ancient Human Cousins introduces human evolution by comparing a family tree to the scientific relationships among species. The video explains Homo sapiens, Neanderthals, great apes, fossils, extinction, adaptation, climate change, and the fossil record. It shows how scientists use preserved remains, tools, and other evidence to study ancient humans and infer how they lived, what they ate, and how their bodies helped them survive. Neanderthals are highlighted as an extinct human relative adapted to cold environments, with discussion of hunting, toolmaking, and environmental change. This life science and anthropology content supports curricula on evolution, organisms, evidence from fossils, and scientific inquiry.