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All emissions by human technology have effects upon the
Mon Jan 9, 2017 9:10am

environment. Nobody plans it that way, but huge industries produce huge effects. There is no "Geoengineering". Engineering implies intent, but these effects are unintended.

When the coal, steel, copper, lead, zinc, etc industries started, the primitive technologies use produced vast quantities of pollution. This was not intended at all, it was just an unanticipated side effect. When the problems became intolerable, public opinion intervened and pollution was reduced. It can never be completely eliminated.

It was the same with electric power, cars, tetra-ethyl lead, textiles, plastics, ...

The motives are progress and profit. Nobody benefits from poisoning the air and water, particularly because we all breathe the same air.

There is no such thing as "Geoengineering". The nearest thing is the campaign to reduce the pollution and other unintended side effects of technology. Nobody is deliberately spraying out nano-particles. They are being emitted from huge steel mills, coal burning power plants, and similar facilities that process mineral which are unencumbered by emissions controls.

Aircraft operate at high speeds and high altitudes. They burn hydrocarbon fuels, producing the usual combustion products: Water, carbon dioxide, sulfur dioxide, nitrogen oxides, incompletely oxidized hydrocarbons, particulates, etc. These are inevitable, and may be reduced, but not eliminated. Water from combustion precipitates into visible condensation trails. Particulates further promote condensation of water vapor from the ambient air. These are more unintended consequences of the airline industry. Huge industries produce huge effects. That is reality.


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