Birdwatch Note Rating
2023-05-15 06:42:56 UTC - HELPFUL
Rated by Participant: A3CD167C8258774AF123CA0AE5343C78E907805988BB23064F34DBA0D8F08FA8
Participant Details
Original Note:
Contrails are formed when water vapour and fine soot particulates from burning jet fuel freeze into ice crystals. In low air humidity, the crystals just dissipate. In higher humidity, they persist, and end up creating visible vapour trails over large areas of sky. https://www.bbc.co.uk/news/blogs-trending-62240071
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