Les Visages oubliés de Palmyre

We live in a world where the powerful deceive us. We know they lie. They know we know they lie. They do not care. We say we care, but we do nothing, and nothing ever changes. It is normal. Welcome to the post-truth world. How we got to where we are now…

In summer 2003, when the heatwave hit in Europe, in Switzerland, the glacier below the Schnidejoch pass, released a mysterious object: a piece of a Neolithic quiver.

In the Formative Period 4,000 years before the Incas and the arrival of the Conquistadors, Peru’s earliest civilizations - the Chavín, Caral, Ventarrón, Sechin, Cupisnique, and Cajamarca cultures - built centers of learning and technological achievements, including the largest work of hydrological engineering in the ancient Americas: the Cumbemayo canals.

David Attenborough brings to life, in unprecedented detail, the last days of the dinosaurs. Palaeontologist Robert DePalma has made an incredible discovery in a prehistoric graveyard: fossilised creatures, astonishingly well preserved, that could help change our understanding of the last days of the dinosaurs. Evidence from his site records the day when an asteroid bigger than Mount Everest devastated our planet and caused the extinction of the dinosaurs. Based on brand new evidence, witness the catastrophic events of that day play out minute by minute.

This explores the mysterious and catastrophic collapse of ancient civilizations during the late Bronze Age, from the Hittites to the Mycenaeans and the Egyptians, revealing the tumultuous events that brought an end to a thriving era of human history, and warns we may be facing similar threats today.

In 1587, more than 100 English colonists settle on Roanoke Island and soon vanish, baffling historians for centuries; now, experts use the latest forensic archaeology to investigate the true story behind America's oldest and most controversial mystery.

Bitter Rivals illuminates the essential history - and profound ripple effect - of Iran and Saudi Arabia's power struggle. It draws on scores of interviews with political, religious and military leaders, militia commanders, diplomats, and policy experts, painting American television's most comprehensive picture of a feud that has reshaped the Middle East.

Séfar (in Arabic: سيفار) is an ancient city in the heart of the Tassili n'Ajjer mountain range in Algeria, more than 2,400 km south of Algiers and very close to the Libyan border. Séfar is the largest troglodyte city in the world, with several thousand fossilized houses. Very few travelers go there given its geographical remoteness and especially because of the difficulties of access to the site. The site is full of several paintings, some of which date back more than 12,000 years, mostly depicting animals and scenes of hunting or daily life which testify that this hostile place has not always been an inhabited desert. Local superstition suggests that the site is inhabited by djins, no doubt in connection with the strange paintings found on the site.

An attempt to re-contextualize the European migrant crisis and ongoing hostilities in Syria, through eyewitness and participant testimony. Children and parents recount the revolution, civil war, air strikes, atrocities and ongoing humanitarian aid crises, in a portrait of recent history and the consequences of violence.

Winner of the Grand Jury Documentary prize at the Sundance Film Festival, Syrian filmmaker Feras Fayyad’s breathtaking work — a searing example of boots-on-the-ground reportage — follows the efforts of the internationally recognized White Helmets, an organization consisting of ordinary citizens who are the first to rush towards military strikes and attacks in the hope of saving lives. Incorporating moments of both heart-pounding suspense and improbable beauty, the documentary draws us into the lives of three of its founders — Khaled, Subhi, and Mahmoud — as they grapple with the chaos around them and struggle with an ever-present dilemma: do they flee or stay and fight for their country?

Nova and National Geographic present exclusive access to an astounding discovery of ancient fossil human ancestors.