Aleks Krotoski tells the story of how GPS helped navigation in the first Gulf War.
How the teashop and cake company Lyons built the first business computer in the 1950s.
How Our World became the first programme to link the globe by satellite in June 1967.
How Paul Robeson used the transatlantic telephone cable to sing live to British fans.
Aleks Krotoski reveals how telephone exchanges changed young women's working lives.