1 The Doubt Machine: Inside the Koch Brothers' War on Climate Science Jan 01, 1970 The Doubt Machine: Inside the Koch Brothers' War on Climate Science 1970 29 min 1 vues Narrated by two-time Oscar winner Emma Thompson, this documentary exposes how two of America's richest citizens, Charles and David Koch, built a vast apparatus to deny the science of climate change and get Republicans elected to office.
