Chemtrails vs Contrails

www.carnicom.com A short video showing that Chemtrails and contrails are not the same thing. This spraying program of the atmosphere is occurring world wide, and our governments refuse to tell us what this is for... What has been found in chemtrails varies with all sorts of toxic metals such as Barium found. What is this for? population culling, weather modification, biological warfare, weakening immune systems, etc. or could it be a combination of things depending what they are doing in the specific day...why are governments quiet about this, is there are larger more powerful group behind this? Will the mainstream media cover this subject properly? Do your own research make your own minds up.