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.
German Zeppelins bomb the Belgian city of Liege, the first air attack on a European city.
Kathy Willis examines the origin and impact of Dutch elm disease across Europe.
Advertisements in British newspapers urge the public to enlist in the army.
Tom Holland and his guests discuss an early example of political image management.
Prof Kathy Willis examines the mystery of a plant's ability to exist in multiple forms.
View all (20)