Do you believe that the contrails left by high-flying aircraft contain sildenafil citratum, the active ingredient in Viagra? Or that light bulbs made from uranium and plutonium are more energy-efficient and environmentally friendly? Or that lemons have anti-hypnotic benefits?

If you do, then you are probably a regular consumer of conspiracy theories, particularly those that appear on the Italian language version of Facebook (where all these were sourced). It is easy to dismiss conspiracy theories as background noise with little if any consequences in the real world.

~ Alessandro Bessi et al, from Science Vs Conspiracy: Collective Narratives In The Age Of (Mis)Information