Contrails in the blue sky over Switzerland
Palabras clave
switzerland,
nature,
climate,
environment,
global,
warming,
condensation trail,
plane,
flight,
fuel,
carbon,
dioxide,
sky,
blue,
toxic,
cloud,
travel,
tour tourism,
holiday,
business,
waste,
fly,
smoke,
steam,
water,
transportation,
line,
aviation,
path,
track,
chemical,
atmosphere,
pollution,
industry,
high,
overhead,
altitude,
elevation,
pilot,
aircraft,
jet,
engine,
exhaust,
air,
weather,
vapour,
view,
sight,
scenery
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