When John Boyd Dunlop figured out how to make pneumatic tyres from rubber, it sparked a boom in demand that had horrific consequences in the Congo Free State, a Belgian colony.
Charles Goodyear was determined to invent a way to make natural rubber withstand extremes of heat and cold. Eventually he succeeded 鈥� we now know the process he devised as vulcanisation. When John Boyd Dunlop later figured out how to make pneumatic tyres from rubber, it sparked a boom in demand that had horrific consequences in the Congo Free State, a colony ruled by Belgium鈥檚 King Leopold. Tim Harford tells how natural rubber still goes mostly into tyres, and its production still causes a degree of controversy.
Producer: Ben Crighton
Editor: Richard Vadon
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- Tue 17 Sep 2019 13:45成人快手 Radio 4
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