People online can unknowingly find themselves in an echo-chamber, having their more fringe beliefs amplified and reinforced by a lack of exposure to conflicting views and evidence. That, coupled with the fact that anyone can publish anything online, has lead to a renaissance in conspiracy theories, pseudo-medical procedures, and general bad science. One of the more interesting conspiracy theories that seems to have grown in popularity over the last decade is the belief that the long-lasting white clouds left in the sky by aircraft are actually chemical or biological agents deliberately sprayed on the population for nefarious reasons. The people who believe in this conspiracy theory call these lines in the sky ‘chemtrails’ and feel so strongly against them that they recently organised protests around the world. I decided to make a series of videos investigating the weird and wonderful world of chemtrails to hopefully shed some light on a conspiracy which most find hard to grasp.