Contrails form when hot, moist jet exhaust condenses and freezes into ice crystals upon entering the cold upper atmosphere.

PHOENIX (AZFamily) — There have been all kinds of theories about jet contrails over the years. In reality, they have a very simple scientific explanation. You will often see a white streak trailing ...

Some contrails can contribute to global warming. Contrails—pure ice clouds (“cirrus”) that form from aircraft exhaust under specific cold conditions—can trap heat in the atmosphere, sometimes creating ...

Industry Insight from Ethical Corporation Magazine, a part of Thomson Reuters. Aviation one of the most emissions-intensive activities 10% of people fly but demand to double by 2050 Innovators working ...

German researchers have begun a series of flights to measure the contrails produced by the latest-generation engines as part of a wider project tackling aviation’s non-CO2 impacts. Led by Germany’s ...