If you’ve ever looked up while an airplane flies overhead, you’ve probably noticed those long, wispy white lines trailing behind. These ...

"Ever wonder about those white lines in the sky?" That's the question Airbus posed this week on social media. Before anyone gets concerned, the aerospace giant hasn't gone down the 'chem trails' ...

But this comes at a cost: the higher-flying aircraft are creating more contrails that last longer, worsening the industry's ...

Fewer aromatic hydrocarbons in the fuel means less soot in emissions. As soot particles act as condensation nuclei for ice crystals in contrails, less soot in aircraft exhaust gases means fewer ice ...

Contrails are initiated when the Schmidt-Appleman criterion is satisfied and when the ambient atmosphere is humid enough to allow for contrail persistence. The initial plume properties reflect ...

The water vapor from the hot plane engine turns to ice mid-air which we see as white lines in the sky called contrails. This is the same phenomenon we see when we breathe hot air on a cold day.

LACKAWANNA COUNTY, Pa. — Joe asks the question, how do contrails form, and why don't you always see them when a plane flies over? Find out how many in this edition of Wham Cam.

Cloud seeding involves introducing chemicals, typically silver iodide, into the atmosphere to enhance precipitation by ...

Researchers say contrails – the white lines in the sky created by planes – can double the amount of warming caused by aviation’s carbon emissions. But tweaking the flight paths of very few ...

Before anyone gets concerned, the aerospace giant hasn't gone down the 'chem trails' conspiracy hole but is keen to tackle the negative impact of "contrails". Scientists and aviation leaders ...

High above Boston's Logan International Airport, a Continental Boeing 777 streams contrails near the dissipating tracks of another airliner. Mark Garfinkel In John Ford’s last western ...