Contrails do at times seem to crowd out real clouds but are they a problem? Well - YES. Read on.
Contrails Worse for Climate Change Than Airplane Emissions
A study in the brand-new journal Nature Climate Change reinforces that by suggesting that the clouds currently being generated by air travel have a larger impact on the climate than the cumulative emissions of all aircraft ever flown.
Over central Europe, values peaked at about 10 percent, in part because the output of the North Atlantic corridor drifted in that direction.Read more at www.wired.com