Most of us first spot them as children—the white lines in the blue sky that are the telltale sign of a flight overhead. Contrails are an instant visual reminder of air travel, and a source of much ...

Small changes to aircraft flight paths to avoid the atmospheric conditions that create condensation trails—known as contrails—could reduce aviation's global warming impact by nearly half, a new study ...

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 ...

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.

MORE ON WHAT CONTRAILS ARE áANDá WHAT THEY ARE NOT. YEAH. LET'S TALK ABOUT CONTRAILS. "NOT CHEMTRAILS." CONTRAILS. WE'LL DISCUSS 'CHEMTRAILS" LATER ON. BUT, YOU'VE SEEN IT BEFORE, I'M SURE. UP WAY UP ...

Reducing aircraft soot emissions may not reduce contrail clouds, according to in-flight observations of emissions from a passenger jet with modern "lean-burn" engines, reported in Nature. Contrails ...

Soot emissions alone cannot explain the formation of contrails, as recent atmospheric research findings show. With extremely low-sulphur fuels, volatile organic compounds and lubricating oil vapours ...

Contrails are created by jet engines cruising at altitude. Is it a cause for worry? Not in the way you might think. When you purchase through links on our site, we may earn an affiliate commission.