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==Logical counter arguments==

==Logical counter arguments==

A world wide secret program for creating artificial contrails coordinated by the UN, like chemtrail believers proclaim, must necessarily be kept secret by a large number of adept people who at the same time break the law. This group would also involve aircraft crews, manufacturers of technologies and means used, ground crews, and airport employees. Chemtrail Supporters like Platte even claim several pilots were fired for refusing participation in this hypothetical chemtrail project. However, not a single one of them has come forth as a whistle blower as of now.

A world wide secret program for creating artificial contrails coordinated by the UN, like chemtrail believers proclaim, must necessarily be kept secret by a vast number of adept people who, at the same time, break the law. This group would also involve aircraft crews, manufacturers of technologies and means used, ground crews, and airport employees. Chemtrail Supporters like Platte even claim several pilots were fired for refusing participation in this hypothetical chemtrail project. However, not a single one of them has come forth as a whistle blower as of now.

To achieve a concentration of 1&nbsp;mg of a specific substance per square metre, one must disperse 1&nbsp;kg of that substance per square km. Europe has an area of 10.5&nbsp;million square kms, requiring 10,500&nbsp;tons of that substance for a single spraying event. A typical large aircraft, such as the Boeing KC-135, has a maximum load of 85&nbsp;tons of fuel<ref>http://en.wikipedia.org/wiki/Boeing_KC-135_Stratotanker</ref>. Therefore 123&nbsp;aircraft of this type were needed to get the job done, if every plane is to fly only once. The surface of the whole earth is about 510&nbsp;million square kms, and 510,000&nbsp;tons of material were needed for a single spraying, equaling 6,000&nbsp;tankers. These figures require the use of the pure substance. If the substance had to be diluted, however, (for example&nbsp;1:9) then 5,100,000&nbsp;tons of the spraying solution are required, equaling 60,000&nbsp;Phantom tankers. This is 3.2&nbsp;times the official number of jets worldwide.

To achieve a concentration of 1&nbsp;mg of a specific substance per square metre, one must disperse 1&nbsp;kg of that substance per square km. Europe has an area of 10.5&nbsp;million square kms, requiring 10,500&nbsp;tons of that substance for a single spraying event. A typical large aircraft, such as the Boeing KC-135, has a maximum load of 85&nbsp;tons of fuel.<ref>http://en.wikipedia.org/wiki/Boeing_KC-135_Stratotanker</ref> Therefore, 123&nbsp;aircraft of this type were needed to get the job done, if every plane was to fly only once. The surface of the whole earth is about 510&nbsp;million square kms, and 510,000&nbsp;tons of material were needed for a single spraying, equaling 6,000&nbsp;tankers. These figures require the use of the pure substance. If the substance had to be diluted, however, (for example&nbsp;1:9) then 5,100,000&nbsp;tons of the spraying solution are required, equaling 60,000&nbsp;Phantom tankers. This is 3.2&nbsp;times the official number of jets worldwide.

Another argument against the chemtrail hypothesis is the fact that the number of foggy days in Europe has been receding since the 1970ies until today (2009). This is based on an examination of data from 342&nbsp;weather stations across Europe and was published in "Nature Geoscience" by scientists around Robert Vautard. The decrease in fog is based on advanced filtering technologies in power plants which cut back sulfur dioxide emissions. Cleaner air is clearer air. And because of that more sunlight reaches the ground.<ref>http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo414.html</ref><ref>http://www.welt.de/welt_print/article3050704/Der-Nebel-ueber-Europa-zieht-langsam-ab.html</ref>

Another argument against the chemtrail hypothesis is the fact that the number of foggy days in Europe has been receding since the 1970ies until today (2009). This is based on an examination of data from 342&nbsp;weather stations across Europe and was published in "Nature Geoscience" by scientists around Robert Vautard. The decrease in fog is based on advanced filtering technologies in power plants which cut back sulfur dioxide emissions. Cleaner air is clearer air. And because of this, more sunlight reaches the ground.<ref>http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo414.html</ref><ref>http://www.welt.de/welt_print/article3050704/Der-Nebel-ueber-Europa-zieht-langsam-ab.html</ref>

==Chemtrails in Goethe's times==

==Chemtrails in Goethe's times==