Gesamtlänge aller Episoden: 16 days 7 hours 28 minutes
How the Lyons catering company pioneered LEO, the first electronic office system
American scientist Dennis Klatt pioneered synthesised speech using his own voice.
How Wilfred Thesiger travelled in one of the world's harshest environments in the 1940s.
India's capital city built a Metro to tackle its traffic and air pollution problems
Lucia Cerna was the only witness to a murder that shocked El Salvador in November 1989
How one of Klimt's most famous paintings was returned to the family who'd owned it
Reita Faria was the first Indian to win the Miss World beauty competition in 1966
How the Love Canal neigbourhood in the US came to symbolise the dangers of toxic waste