From the British Library in the heart of London, BBC presenter Tanya Beckett introduces us to the first round-up of history in 2015.

Witness speaks to the first man to surf waves four storeys high on the Californian coast and the Spanish MP who witnessed an attempted coup in parliament.

Tanya Beckett introduces this month's round-up of history. Witness speaks to the man who survived the 1995 Sarin gas attack on Tokyo's subway system.

From London's Olympic Park, Azi Farni tells the story of five extraordinary sporting moments, including the man who persuaded Pele to join a little-known American soccer team. Show more

Seventy years since the first atomic bomb was dropped on the Japanese city of Hiroshima, Witness speaks to a Japanese doctor who saw the bomb fall.

In the final Witness of 2015, Tanya Beckett brings us a round-up of the most striking films of the last 12 months.

Tanya Beckett introduces us to five more extraordinary moments in history, including a Cuban who watched as Fidel Castro's guerrilla forces swept into Havana in January 1959.

Tanya Beckett hears from the British fisherman who stood up to Icelandic gunboats, and Judit Polgar remembers her famous chess victory over Garry Kasparov.

Tanya Beckett introduces us to people who have experienced important moments in history, including a man who was with anti-apartheid activist Steve Biko when he was arrested. Show more

Witness meets a man who was on site to clean up Britain's worst ever nuclear accident, the CIA agent who tracked down Che Guevara in Bolivia and a woman taken hostage in Moscow. Show more

Tanya Beckett is at the British Library introducing us to five more extraordinary moments of history, including when the first living creature was sent up to orbit the Earth.

Tanya Beckett looks back at five of the most memorable stories from Witness over the last 12 months, including an archaeologist who has worked on the Terracotta Army site in China.

In this month's Witness, the son of the man who invented Lego and the biologist who was the first to discover whale song. Show more

Tanya Beckett introduces us to more people who have experienced extraordinary moments in history, including a Holocaust survivor who was a child in the Belsen concentration camp. Show more

In this special edition of the programme, Witness introduces five important royal moments of the recent past. Show more

This month on Witness: why Britain expelled 90 Soviet diplomats in the 1970s, how an Australian town killed its residents and how one man and his dog rescued the 1966 World Cup.

From the British Library in London, Tanya Beckett introduces five films, including a Uruguayan footballer who broke Brazilian hearts more than 60 years ago.

Tanya Beckett introduces five films, including a story of arrest and execution in Saddam Hussein's Iraq, and an account of the day when a Greenpeace ship was bombed.

This month we meet a man who helped track down Che Guevara and a gay couple who were one of the first to celebrate their legal civil union.

A collection of stories including a tale of love against the odds during the Cold War, a feminist who disrupted a Miss World contest and a survivor of the Bhopal disaster.