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Scotland's rail network crosses a landscape voted the best in the world. This series follows the staff and enthusiasts safeguarding these iconic routes.

It's February 1953, the first anniversary of Queen Elizabeth's reign. Little does the Queen know she is about to be deployed in a US plot to topple Iran's democratic leader in favour of an all-powerful shah. Planned by MI6 and executed by the CIA, the coup destroyed Iran's democracy and had an impact on relations between Iran and the West. Using declassified secret documents, this documentary reveals the truth of what happened in 1953.

The Cuban Missile Crisis may well have been the single most dangerous moment in the history of mankind. In this documentary the story is told in the words of eyewitnesses from the US, the former USSR and Cuba: the men and women who saw Kennedy, Khrushchev and Castro up close as they gambled with the future of the planet. As one of them says, 'The world almost came to an end in October 1962.'

Examines the way South Korea has dealt with the coronavirus outbreak, revealing a story of careful planning, mass testing and contact tracing on an astonishing scale which allowed South Korea to avoid a UK-style lockdown and economic devastation. With countries across the world failing to control the spread, the programme questions if South Korea will be able to hold off a second wave of infection, and what the UK can learn from the strategy South Korea adopted.

Art meets science and detective story lifting the lid on some of the most controversial stories in the art world. Pioneering forensic scientist Dr Maurizio Seracini has made his name by ingeniously adapting the latest medical and military technology to reveal the secrets of great artistic masterpieces. In this film he sets out to investigate the unsolved mysteries surrounding some of the works of genius produced by world famous Renaissance artist Leonardo Da Vinci.

Arguably the world's most famous work of art, millions of people visit it every year. Until now however nobody has been able to explain exactly what the Sistine Chapel's ceiling is actually trying to tell us. Though important and timely the film (airing as it does to celebrate the 500th birthday of the work) it is also the product of the detective work and obsessive scholarship by art critic Waldemar Januszczak which spans the last 30 years. During this time he has been trying to unlock the secrets of Sistine Chapel's complex pictorial codes and sumptuous iconography.

Following Louis Bird's journey to piece together the life of his father, Peter Bird, after he disappeared on a voyage at sea in 1996. In 1983, Peter Bird was the first person to row the Pacific Ocean single-handed. Crossing 8,000 treacherous miles in a row-boat, turned Peter into an international legend. On a 1996 voyage, he disappeared, and his empty boat was recovered with a film camera still attached, but he was never found. This programme follows Louis on a personal journey to understand his father, as he and his mother come to terms with feelings of loss and abandonment.

Follows officers as they assume new identities online and are given the task of engaging with people who have demonstrated a sexual interest in children.

As Grayson and Philippa Perry prepare to throw open the doors to their studio for a new series of Grayson's Art Club, they share advice and tips about the art for the public to send in for the new run. The couple explain the themes that will be explored in the second series. And they look back on the extraordinary year we've all been through.

The discovery of China's Terracotta Army in 1974 captured the imagination of the world. But that first dig only revealed a fraction of this enormous and extraordinary treasure. Since then, scientists have resumed work on the site, and their research has turned up a series of new discoveries about the warriors and the people who made them over two millennia ago. With exclusive access to pioneering research conducted by UCL and the Terracotta Army Museum, this documentary reveals those new secrets.