3/4 How saints, scholars and slate shaped the city of Bangor. (R)
2/3 The life-or-death decisions facing doctors and midwives in neonatal emergencies.
8/10 The team explore whether the labels on food always tell the full story. (R)
4/4 A look at the people who helped create a more culturally diverse postwar Britain. (R)
3/6 Cranes and geese soar over Venice, the white cliffs of Dover and Edinburgh.
3/6 Cranes and geese soar over Venice, the white cliffs of Dover and Edinburgh. (R)
2/3 Discover how - and why - different breeds of dogs have such different senses and abilities (R)
11/12 David Lindo heads into central London to experience the magic of the dawn chorus.
11/12 With the exclusive results from this year's most important poll - Britain's national bird.
Following participants in an extreme military-style obstacle course, the Tough Mudder. (R)