As President Trump takes office, Katty Kay in Washington and Christian Fraser in London report on the events that are shaping our world.

The series exploring strange animal behaviour focuses on unusual partnerships, including the fishermen who have forged a co-operative venture with wild dolphins. Show more

Edward Mannock and James McCudden were two of Britain's great fighter aces in World War One. This is the story of their battle to survive and the mystery surrounding one's death. Show more

Documentary looking at the variety of wild animals inhabiting the Himalayas, from monkeys, wolves and bears to foxes, snow leopards and pheasants. Show more

Dan Cruickshank explores the secrets of the bridges that have made London what it is. Along the way, he uncovers stories of the sublime ambition of London's bridge builders. Show more

Dr Hannah Fry tells the story of the remarkable life of Ada Lovelace - a 19th-century countess whose work helped give rise to the modern era of computing. Show more

Stephen Smith meets Andy Warhol's friends and confidantes to get closer to the man behind the enigmatic public image, experiencing a day in the life of the pop art superstar. Show more

Al Murray is joined by former director of MI5 Dame Stella Rimington, political comedian Matt Forde and film expert Matthew Sweet for a fresh look at the great British spy movie. Show more

Michael Scott looks at the decline of Athens and the triumph of theatre, which spread throughout the Greek world and beyond and gave rise to a new kind of comedy. Show more

Dan Cruickshank explores the secrets of the bridges that have made London what it is. Along the way, he uncovers stories of the sublime ambition of London's bridge builders. Show more