evidence: 'Chemtrail' conspiracy theorists: The people who think governments control the weather - Published [...] "Chemtrail" conspiracy theorists vary in their claims. But some of the most popular include the belief that governments control the weather on a massive scale, that scientists carrying out legitimate research about how to counteract climate change through a process called geo-engineering are secretly poisoning us, or even that secret powerful groups are spraying us with chemicals to make us pliant and easy to control. [...] Nonetheless, "chemtrail" and geo-engineering conspiracy theorists flood social media with speculation, questions and images of contrail cross-hatched skies. One international survey, external suggested almost 17% of respondents thought chemtrail conspiracy theories true or partly true.