4. Bölüm: 4. Bölüm

Bölüm Konusu

Adam Hart-Davis visits London as he salutes more pioneers of science. He sees how Brunei tunnelled under the Thames, discovers the inventor of the vacuum cleaner, and follows the trail of a cholera outbreak in Soho. Plus the rector who found how sap gets up trees, and the revolutionary motor that worked without revolving.