NewsUnusual Contrails Bring Panic To Gaza ResidentsTsionizm StaffNovember 18, 2019November 18, 2019 by Tsionizm StaffNovember 18, 2019November 18, 201902625 Crow instability (named after its discoverer) happens when wingtip vortices do not dissipate prior to meeting up with jet exhaust contrails...