“THE twentieth century has been characterised by three developments of great political importance,” Alex Carey noted in his seminal 1995 book Taking the Risk Out of Democracy, “the growth of democracy, the growth of corporate power and the growth of corporate propaganda as a means of protecting corporate power against democracy.” The Australian writer’s analysis is well illustrated by the engrossing 10-part BBC Radio 4 series How They Made Us Doubt Everything. Presented by Peter Pomerantsev, author of the 2019 book This Is Not Propaganda: Adventures in the War Against Reality, the series looks at how corporate public relations firms engineered doubt about the connection between smoking and cancer in the 1960s and then used similar tactics to manufacture doubt about climate change.