Aircraft contrails: health and environmental effects

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


Contrails and chemtrails: guidance

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Factual paper concerning about aircraft contrails explaining:

  • what they are
  • the level of departmental awareness
  • the health effects
  • the environmental effects
Published 2 October 2012
Last updated 30 July 2015 + show all updates
  1. Updated to remove references to chemtrails and barium measurements.
  2. First published.