The latest national and international news, exploring the day's events from a global perspective.

Danny Baker considers some tunnel-based archive footage and endeavours to give a quick brush up on these mysterious, subterranean realms.

Dan Snow traces the development of Britain's railways from the late 19th century to the outbreak of World War II. During this time the railways changed the economy profoundly. Show more

James concludes his quest with an electric guitar. 147 pieces must be reassembled, entailing soldering, the use of precision screwdrivers and fiddly electronics. Show more

Series chronicling the impact of technology on war. Untested in combat and generally derided, the Harrier proved itself in the Falklands conflict. Show more

Documentary following the construction of the Astute nuclear submarine, which has been 14 years in the making and cost over a billion pounds. Show more

Two-part series telling the remarkable story of a band of visionaries who rescued some of the little narrow gauge railways that once served Britain's industries. Show more

Documentary revealing the wildlife of the Scottish Highlands, seen by film-maker Fergus Beeley. Featuring rare black-throated divers and white-tailed sea eagles. Show more

Documentary about comets. Many ancient civilisations believed comets were gods. Now, space missions can show what comets are really made of and where they come from. Show more

Dan Snow traces the development of Britain's railways from the late 19th century to the outbreak of World War II. During this time the railways changed the economy profoundly. Show more

James concludes his quest with an electric guitar. 147 pieces must be reassembled, entailing soldering, the use of precision screwdrivers and fiddly electronics. Show more

Series chronicling the impact of technology on war. Untested in combat and generally derided, the Harrier proved itself in the Falklands conflict. Show more