Aircraft contrails

Explains what contrails are and provides information about the health and environmental effects.



Factual paper on aircraft contrails explaining:

  • what they are and how they are caused
  • the health effects
  • the environmental effects
Published 2 October 2012
Last updated 26 April 2018 + show all updates
  1. Links updated.
  2. Updated to remove references to chemtrails and barium measurements.
  3. First published.