Key insights from the study of early hominins contribute to our understanding of walking. These include evidence of bipedalism in species such as Ardipithecus ramidus and Australopithecus afarensis, which provide insight into the evolution and development of walking in human ancestors. Additionally, the comparison between different hominin species like Homo habilis and Homo erectus helps us understand the changes in limb strength and locomotion that occurred over time. The examination of fossil remains, footprints, skeletal structures, and genetic studies allows researchers to reconstruct the evolutionary history of walking and its significance in human evolution.