Birdwatch Note Rating
2023-05-14 16:22:29 UTC - HELPFUL
Rated by Participant: B91F15A4D2141322F9BCE4D2A6DB3325661D1C351E96A67128BC64844A590843
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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