Sensors are ubiquitous in  Songdo, South Korea, a new city being built from scratch: Photograph: copyright  Gale International

Southwest of Seoul a $35 billion (€32bn) city is being built from scratch. Every inch of Songdo in South Korea has been wired up, with screens for vid(...)

Frederick G Donnan: during the first World War he assisted in improving the production of chemicals needed for manufacturing explosives and mustard gas. Photograph: SSPL/Getty Images

Two of the most significant engagements of the first World War took place in 1916. The Battle of Jutland, the largest naval battle of the war, began (...)