Add Yahoo as a preferred source to see more of our stories on Google. Airlines have tamped down on carbon emissions by flying planes at higher altitudes. But this comes at a cost: the higher-flying ...

Lines crossing in the sky can be a source of panic for some, but physicists say they are less alarming than they first appear ...

Contrails, those white lines that form behind airplanes in certain atmospheric conditions, can have a significant climate ...

Add Yahoo as a preferred source to see more of our stories on Google. Contrails — the white line-shaped clouds left behind by planes — pose a particular problem as they are able to trap heat. Julian ...

Aviation's climate impact extends beyond carbon dioxide emissions. A new international study, involving researchers from Chalmers University of Technology and the University of Gothenburg, reveals ...

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 ...

"People assume that there must somehow be a bigger explanation." ...

Despite conspiracy theories about so-called chemtrails, there’s no evidence that the white plumes seen trailing from high-flying airplanes are part of a secret government program to spray toxic ...

Of the varied conspiracy theories regarding contrails – you know, chemtrails – one stands out for being especially wrong: the belief that the plane-made clouds are chemicals the government is secretly ...

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 ...

THERE are few more delightful antidotes to stress than to lie on your back in warm grass and watch the clouds go by. As children, we love finding the outlines of animals and castles in the billowing ...