Änderungen

*http://www.lacarte.org/health/chemtrails/debunkery/

*http://www.lacarte.org/health/chemtrails/debunkery/

*http://contrailscience.com/contrail-or-chemtrail/

*http://contrailscience.com/contrail-or-chemtrail/

*http://www.af.mil/shared/media/document/AFD-051013-001.pdf

*http://www.af.mil/shared/media/document/AFD-051013-001.pdf (gelöscht)

*http://www.hans-egebo.dk/Skeptic/contrails.htm

*http://www.hans-egebo.dk/Skeptic/contrails.htm

*http://www.env.leeds.ac.uk/envi1200/slides/Chapter%209.pdf zur Contrail-Entstehung

*http://www.env.leeds.ac.uk/envi1200/slides/Chapter%209.pdf zur Contrail-Entstehung