re: Scientists Hid Chemtrail-Style Experiments from Public

First there are no "chem trails". That is the heat from the engine when you reach higher altitudes where the temperatures are colder. As far as them dumping stuff into the atmosphere to try and impact weather, they have been doing that for decades from cargo aircraft and they haven't been very secret about it. They did it with hurricanes to try and see if they could cool them down to cause the hurricane to weaken. The impact it would actually have on the atmosphere would be zero. The ppm would be so low just in that are it would be almost non existent.