Free Online HD on Lookmovie. Psychologists, linguists, and fossil hunters join forces to trace what makes the human species genetically unique. Drawing on psychology, linguistics, genetics, archaeology, and paleontology, this documentary series reconstructs humankind's evolutionary journey, from the earliest primate ancestors through the physical, cognitive, and social transformations that set us apart. Interviews with leading researchers and computer simulations based on fossil evidence bring the story to life.