Documentary which follows the singer of US rock band Eels, Mark Everett, as he travels across America to learn about the father he never knew, quantum physicist Hugh Everett III. Show more

How plants have driven the greatest changes to the Earth. Prof Iain Stewart shows how they first harnessed light from the sun and created our life-giving atmosphere. Show more

Documentary series. Professor Iain Stewart explains how grass fought its enemy, the forests, how it transformed ocean life and how it triggered human civilisation. Show more

The story of Roald Dahl's greatest adventures, and how his real-life escapades find expression in his most famous books. Show more

Christopher Eccleston narrates a docudrama about the 1918 flu pandemic, which killed more than 50 million people. Told using powerful personal testimony. Show more

Documentary series. At the dawn of the first millennia, there was no Scotland or England. Neil Oliver reveals how the Gaelic Scottish Kingdom - Alba - was born. Show more

In this edition, Jamie Crawford uses aerial images to discover how the Scots have lived off the land over the centuries. Show more

David Malone's documentary delves into the secrets of ocean waves, revealing that waves are not made of water, that some waves travel sideways and more. Show more

In the final episode of the series, Iain Stewart finds out about daredevil scientist Louis Agassiz, who first imagined the world had been gripped by an ice age. Show more

Chris Packham uncovers why the most intelligent animals on the planet are also the most social as he swims with dolphins and meets deceitful chimps. 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

Documentary series. Professor Iain Stewart explains the role of the earliest flowers in sculpting the earth and driving the evolution of all animals. Show more

Art critic Matt Collings explores the most famous equations in science and realises that concepts of beauty and elegance have been used by many scientists to advance their work. Show more

Victoria Coren Mitchell explores the complex life of Mary Poppins author PL Travers, looking at her 20-year battle with Walt Disney, whose 1964 film version she loathed. Show more

Documentary exploring Britain from below. Dallas Campbell reveals how we can only understand the world around us by discovering the hidden wonders beneath our feet. Show more

Angela Rippon and Dr Chris van Tulleken investigate how much of the way we age is down to genetics and how much of it is down to the way we live our lives. Show more

Angela Rippon and Dr Chris van Tulleken investigate what can give brains a boost, including how injections of young people's blood may help beat dementia. Show more

Chris Packham, Helen Czerski and a team of explorers and scientists investigate the mysterious forces that can destroy an iceberg. Show more

Scientists and explorers travel to the Arctic to reveal the unknown world of icebergs, starting with the birth of an iceberg at Greenland's Store glacier. Show more

Horizon follows an international team of volcanologists in Iceland as they draw fascinating parallels between the volcanoes on Earth and those elsewhere in the solar system. Show more