Science Clips: How cacti survive without water
A look at how cacti are able to survive in a dry desert environment by storing water.
- Provider: BBC
Licence: ERA Licence required
Free to watch for UK schools, colleges and universities with an ERA Licence
UK only
Staff and students of licensed education establishments only
Cannot be adapted
03: The Ultra Secret | Station X
The programme starts with the 1941 Invasion of Russia. In a speech Winston Churchill publicises mass executions and the systematic slaughter of Jews, feeling the outrage greater than the imperative to protect the source. Loris Gherardi's role in the Theft of the Black Code, and its continued use under Colonel Norman Fiske and Bonner Fellers, is reconstructed.
01: The Keys to the Reich | Station X
The first episode revealed that Station X was the cover name for the World War II radio interception station co-located with the Government Code and Cypher School at Bletchley Park.[6] In 1938 the British Secret Service bought Bletchley Park, installing wireless receiver (call-sign: "Station X") to pick up German messages. A small group of aristocratic codebreakers visited the Country house with their staff and butlers under the guise of "Captain Ridley's shooting party" to establish its suitability.