The German government receives word that Britain will remain neutral.
Prof Kathy Willis explores the discovery of new laws to create plant hybrids.
Panic in the financial markets as the Bank of England is forced to close.
Prof Kathy Willis examines how one man's flower was turning into another man's weed.
Jonathan Freedland on attitudes to young people who volunteer to fight in foreign wars.
The tsar orders a full mobilisation of the Russian army.
Prof Kathy Willis examines Charles Darwin's use of orchids as a scientific tool.
The Kaiser sends a telegram to the Tsar to try to prevent war.
Tom Holland and his guests discuss honour among 18th century street fighters.
Prof Kathy Willis explores the smuggling of rubber seeds from South America.
View all (21)