4/5 How the teashop and cake company Lyons built the first business computer in the 1950s.
Miranda Krestovnikoff presents the house crow, native of southern Asia.
Farmland bird numbers, the environmental stewardship scheme and the beetroot harvest.
Tom Heap meets a man who can turn dirty water into clean, drinkable water.
3/5 How Our World became the first programme to link the globe by satellite in June 1967.
Anna Hill presents the latest on milk prices and the use of manure as bedding for cattle.
Jim Al-Khalili talks to Maggie Boden, a world authority in the field of AI.
2/5 How Paul Robeson used the transatlantic telephone cable to sing live to British fans.
Miranda Krestovnikoff presents Australia's satin bowerbird.
A new report claims banning too many pesticides could lead to lower yields on farms.
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