The latest national and international news, exploring the day's events from a global perspective.

First transmitted in 2015. Russian violinist Alina Ibragimova performs 3 of Bach's Sonatas and Partitas- Sonata No 1 in G Minor, Partita No 1 in B minor and Sonata No 2 in A minor Show more

How Albert Einstein thought he had found the fatal flaw in quantum theory, because it implies that sub-atomic particles can communicate faster than light. Show more

Drawing on 45 years of Horizon archive, Dr Kevin Fong presents a documentary showing how the intriguing possibility of life on Mars has fuelled man's quest to visit the Red Planet. Show more

Wildlife series. The team push deeper into the rainforest, enlisting the help of a tribe to find and film the birds of paradise as they perform their courtship displays. Show more

Dr James Fox explores how tension between two cultures - one courtly and European, one home-grown and vital - helped bring the country to civil war. Show more

How Albert Einstein thought he had found the fatal flaw in quantum theory, because it implies that sub-atomic particles can communicate faster than light. Show more

Drawing on 45 years of Horizon archive, Dr Kevin Fong presents a documentary showing how the intriguing possibility of life on Mars has fuelled man's quest to visit the Red Planet. Show more

Dr Nina Ramirez reveals the codes and messages hidden in Anglo-Saxon art by examining artefacts like the Sutton Hoo treasures, the Staffordshire hoard and the Franks Casket. Show more