PBS Monday 14 February at 9.50PM

Once, we were not alone in our humanity. Instead, we were one of at least four distinct species of human – and possibly more. So what happened to these ‘lost tribes’ of humanity? And where did they go?

Over the last few years a series of groundbreaking discoveries have transformed our understanding of the past. Now, documentary series THE LOST TRIBES OF HUMANITY meets the experts and examines the science that is reshaping our understanding of the world.

From Gorham’s Cave, Gibraltar – reputedly the last known place where Neanderthals lived – to the tiniest sample of archaic human DNA, discover the lost tribes that once walked the Earth, and learn the answers that strike at the heart of who we think we are.