A crazy cold week in Florida brings starker contrails. But it's just winter conspiring against us, not the feds trying to ...

Add Yahoo as a preferred source to see more of our stories on Google. I recently wrote a column about the “chemtrail” conspiracy theory, and to say it caused quite a stir would be a serious ...

If you look up in the sky during a sunny day, you might see long, skinny looking clouds coming from behind planes. Those are contrails, short for ‘condensation trails.’ Airplane engines produce them ...

Here’s what you should know about contrails, according to an aviation meteorologist. pic4you/Getty Images If you’ve ever looked up at the sky and watched a plane fly by, you’ve probably noticed a long ...

Ever notice some days the "jet trails" are long and some days they're short. These contrails formed by airplanes flying from 25,000 to 40,000 feet can be a weather clue. They only form in moist air ...

You see them all the time, probably almost daily — airplane contrails and factories or power plants with never-ending white gasses billowing out. Did you know these can give you clues to our ...

Contrails — those lines of wispy white clouds that follow some jets — may not be so harmless. Airlines and scientists are coming to a consensus that the water vapor trails created by airplanes at high ...

Clouds come in all types, shapes and sizes. It can be used to determine current and future weather conditions just by looking at the sky. Clouds were studied and named by Englishman Luke Howard in the ...

Efforts to influence the weather, from cloud seeding to controversial geoengineering proposals, are drawing renewed scrutiny amid growing questions about oversight and regulation in the United States.

ABSTRACT Straightforward application of the Schmidt–Appleman contrail formation criteria to diagnose persistent contrail occurrence from numerical weather prediction data is hindered by significant ...