Synopsis
Professor Brian Cox explores the solar system's hidden realms, between and beyond the planets, where countless worlds lie hiding in the darkness.
Further Information
Similar broadcast resources
Chemical weapons | Inside Porton Down: Britain's Secret Weapons Research Facility
Introducing the idea of chemical and biological weapons, leading onto pathogens.
Inside Porton Down: Britain's Secret Weapons Research Facility
Michael Mosley investigates Porton Down, Britain's most secretive and controversial military research base. He comes face to face with chemical and biological weapons old and new.