The color of the sky is changing, on purpose?

http://www.youtube.com/watch?v=uoLrj5mnarI I didn't believe chemtrails were real either. Then I witnessed a little thing myself with my own eyes that made me change my mind. I watched a jet fly, leaving a long puffy tail that lingered in the air, then the trail didn't stay in in a spot, and there was a a gap in the trail. Then, approximately 30 seconds later, there was a dull grayish black glow where the gap was, then about 10-15 seconds later, the glow stopped. Then the chemtrail expanded into a huge hazy cloud. Contrails do not expand, they do not linger. They are not bogus. I am not saying what they are for, because there could be a variety of reasons, the reasons could even be good: perhaps they are vaccinating people with airborne particles.

Right, that would be an effective use of vaccines which are expensive to produce...have a large percentage of the product land on trees, roads, building roofs, etc. Jet engine exhaust actually reacts differently to the atmosphere depending on wind speed, temperature, air pressure and humidity, ie. the amount of moisture in the air. If there's moisture in the air contrails form and are no different from the cirrus clouds that naturally form in that region of the atmosphere. When jet fuel burns, it releases both water vapor and microscopic particles of exhaust. A contrail occurs when the jet’s water vapor condenses around its own exhaust particles. Cirrus clouds form when upper atmospheric water vapor condenses around dust particles in the air. Contrails, just as clouds, spread or change formation as the air around them move. In the video you provided, the second plane was clearly farther away than the other two and the reason that one did not leave a contrail is because the atomsphere was dryer in that location. Now, I'm sure you know what a weather front is but, in case you don't, this is when the air changes from dry to containing moisture...and vice versa. By the way, since I live in a rural area, I've seen the crop dusters fly many times, dispersing chemicals on the citrus groves and sugarcane fields. They fly low when releasing their loads since they don't want the product to be carried off target by the air currents. Releasing anything in the upper atmosphere and expecting it to come even remotely close to landing on any target would be foolish. Believe what you want to believe though.

Up high it could be used as weather manipulation. The chemicals could also combine with clouds, and be released upon us when it rains, covering more area. There are many accounts, and as I said myself, I have seen it with my own eyes. That a very same plane will suddenly stop producing a chemtrail, and there will be a gap. Now, this plane doesn't change its altitude. Also, in the space where it was not formed, I saw a dull gray black color, which is what made me believe these were real, and not just a normal occurrence. Any craft that I saw as a child only had contrails, that disappeared after a short while, leaving a limited trail from the jet. I remember this so well, because as a child I was disappointed that the trails couldn't stay in the air and be very long. Even in all of the photos I look back on, there are none of these chemtrails in the photos, just contrails. And I come from a very large family, with a whole lot of photos. Chemtrails are a very clever way to spray stuff on us right under our noses, because many people just shrug them off saying they are contrails. They are hidden in plane view.