08-Sep-1832: Darwin encounters bolas

On 8th September 1832, Charles Darwin observed gauchos using bolas. He later tried them out for himself, and managed to ensnare his own horse in the process.

18-Jun-1858: Wallace’s bombshell

Alfred Russel Wallace

On 18th June 1858, Charles Darwin received the biggest bombshell of his scientific career: it looked as if he was about to be scooped!