Since 2002, many people have been increasingly aware of persistent aircraft "contrails", a contrail is meant to be the release of water vapour from an aircraft – but some believe that these releases providing spray-like formation in the sky are something more sinister. Could they actually be deadly toxin and bio-agents used in germ warfare?
The UK Government (DEFRA) has flatly denied Chemtrails theory but the debate rages on. The evaporation of these contrails and their time-span of evaporation is what has sparked reports into whether they truly are contrails. A report was posted to the Civil Aviation Authority, DEFRA and DoT and requests for information about flight data during flights where trails have been noticed has been largely ignored.
http://www.rense.com/general77/widesp.htm
http://www.checktheevidence.com/Chemtrails/OfficialResponses/