Prof Kathy Willis probes the tools that are proving essential to map the world's flora.
Steve Biko led South Africa's Black Consciousness Movement before he was killed in 1977.
Heather Jones explores a lost intelligence report warning of Germany's invasion of Poland.
Uncovering the elusive ways plants move and respond to their surroundings.
6/6 Margaret Macmillan tells the story of the events leading up to the First World War.
The French army declares a victory in their lost province of Alsace.
Prof Kathy Willis examines the legacy of early encounters with alkaloids from plants.
British Trade Unions announce they will not oppose the war.
Kathy Willis explores Nikolai Vavilov's pioneering search for unused varieties of crops.
Jonathan Freedland looks at the boom in coffee shops now and in the 17th century.
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