Martha Kearney reveals the secrets in the cabinet and prime minister papers of 1983. Read more
Martha Kearney reveals the secrets in the cabinet and prime minister papers of 1983.
Martha Kearney reveals the secrets within the prime minister's newly-opened files of 1984.
Martha Kearney reviews the release of secret government files from the mid 1980s.
Martha Kearney reviews the release of secret government files from 1986.
The Nazi Persecution Files
Newly declassified documents tell the stories of Britons persecuted by Nazi Germany.
Martha Kearney looks at secret government papers from 1992.
Roy chats to author Catrin Collier whose new historical novel is about Owain Glyndwr.
Proving climate change: The Keeling curve
An American scientist began recording carbon dioxide levels in the atmosphere in 1958
Mexico City slashes car use
How Mexico City cut its dangerously high air pollution levels
St Michael's Primary and the Parkhead Forge
Pupils from around Scotland delve into local history and produce their own documentary.
The man who fed the world
Dr Norman Borlaug’s pioneering work on disease-resistant grains saved millions.