Birdwatch Note Rating
2023-07-06 22:50:08 UTC - HELPFUL
Rated by Participant: 8F431B4819E01A9510414F79A3FF503BAC5E09630CD0659CCFD7B032A587AD26
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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