Snow and rainfall from chemtrail sprayed locations have been analysed and found to contain concentrations of chemicals and elements far beyond the normal and 'natural' levels, including some compounds that are not at all a normal component of the earth's atmosphere.
Someone is responsible for supplying the machinery and chemicals that produce this aberration and for converting, maintaining and operating the aircraft that spray these concoctions into the upper atmosphere.
Yet none in the mainstream media appear to be paying any attention to this, or asking questions as to who, why etc.