From 1917 until the fall of the Berlin Wall in 1989, a primary anti-communism developed, which often turned into conspiracy theories. Some people believe that the Communists managed to take power secretly in Paris, London or Washington.
Since 2003, when American Vice President Al Gore launched the issue of global warming, many climate skeptics have believed that it is a conspiracy and that the climate is not warming at all. Christophe Bourseiller shows us the steps that led to this reasoning.