Contrails – short for condensation trails – are linear clouds made up of ice crystals that form behind jet aircraft at high ...

Contrails — the white line-shaped clouds left behind by planes — pose a particular problem as they are able to trap heat. Julian Stratenschulte/dpa Passenger aircraft contribute significantly to ...

Environmental Protection Agency (EPA) Administrator Lee Zeldin said Thursday that Americans have “legitimate questions” about airplane contrails as his agency launches webpages aimed at combatting ...

The challenge of addressing aviation’s non-carbon dioxide emissions is receiving greater attention, with the climatic impact associated with tell-tale signs in the sky coming under increased study.

Cloud seeding does not create clouds or precipitation from clear skies. It can only be effective when clouds with the right ...

Four research figures show how contrails appear in two satellite views (left) and two photographs taken from the MIT Green Building. Aviation’s climate impact is partly due to contrails — condensation ...

If you've ever looked up at the sky and seen an airliner flying overhead, you may have noticed white trails behind it. Contrary to the popular urban myth, these are not chemical agents or chemtrails, ...

While there is a growing consensus that aircraft contrails contribute to aviation-attributable atmospheric warning, there is less agreement about how and when to implement avoidance strategies. But ...

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