You are herechemtrails
" Have you noticed anything unusual in the sky lately? If you're over 30 or so (as of this writing), you may remember what a clear blue sky looks like. Otherwise, you may not even realize that these long, persistent trails coming out of the backs of planes are not normal contrails. Prior to the mid '90s, airplane contrails did not have the tendency to persist as long as they do now. Observe how the trails form wispy, persistent clouds, gradually dispersing into haze. You may see rainbows (as seen here) and pink and green dichroism (2-colors). Diffraction and dichroism are strong indicators for the presence of metallic aerosol. " Read more »
A study conducted using the scientific method in the Houston area shows that (1) an abnormal type of aircraft contrail, one that is significantly more persistent, is being produced by some planes, and that (2) the planes that produce this type of contrail (some would call them chemtrails) are not registered air traffic for the area, but rather, unidentifiable jets.
The meticulous study, by M. Steadham, was conducted using specialized software that tracks all air traffic (commercial, passenger, and private flights) which are required, under Instrument Flight Rules, to submit a flight plan to the regional air traffic control center. Read more »