The latest national and international news, exploring the day's events from a global perspective.
Michael Portillo takes a white knuckle walk over the Carrick-a-Rede rope bridge and experiences the delights of the Giant's Causeway. Show more
Series exploring strange behaviour in the animal kingdom focuses on breeding rituals, from dancing scorpions to mice that mate themselves to death. Show more
Ben Garrod delves into the surprising ways in which bone has evolved to help vertebrates sense the world around them, from wolves and sheep to the great grey owl. Show more
In the Rockies, Richard Fortey explores a fossilised seabed containing bizarre life forms that have revolutionised understanding about the beginnings of complex life. Show more
Series telling the story of the First World War. The Ottoman Empire, Germany's ally, summoned all Muslims to Jihad - holy war - to overthrow Allied power in the Middle East. Show more
Documentary celebrating the singing career of ABBA performer Agnetha Fältskog, which began in the mid-60s when she was just 15, as she records her comeback album at the age of 63. Show more
Ballerina Tamara Rojo takes us backstage as she prepares for one of classical ballet's biggest challenges - the dual lead in Swan Lake, the ultimate role for any dancer. Show more
The Golden Age of Steam Railways
Episode 1: Small Is Beautiful
59 minutes on BBC Four
Available for years
Two-part series telling the remarkable story of a band of visionaries who rescued some of the little narrow gauge railways that once served Britain's industries. Show more
Series exploring strange behaviour in the animal kingdom focuses on breeding rituals, from dancing scorpions to mice that mate themselves to death. Show more
Ben Garrod delves into the surprising ways in which bone has evolved to help vertebrates sense the world around them, from wolves and sheep to the great grey owl. Show more
In the Rockies, Richard Fortey explores a fossilised seabed containing bizarre life forms that have revolutionised understanding about the beginnings of complex life. Show more