Watch this: www.youtube.com/watch?v=1oyN1t58bbQ "Doubt over climate science is a product with an industry behind it With its roots in the tobacco industry, climate science denial talking points can be seen as manufactured doubt. It’s a product that you can find in newspaper columns and TV talk shows and in conversations over drinks, at barbecues, in taxi rides and in political speeches." (...) Read the full article here: www.theguardian.com/environment/planet-oz/2015/mar/05/doubt-over-climate-science-is-a-product-with-an-industry-behind-it Watch "Merchants of Doubt" documentary here: archive.org/details/Mercadores.da.Duvida-Documentario.2014