Although they're really just ice crystals, the contrails left by high-flying airliners are nonetheless not entirely innocuous. According to a new study, however, changing the altitude of flights by ...

In the last years I watched the proliferation of pictures showing aircraft flying at high altitudes followed by the characteristic white trails (I discussed this thing in Italian in this post: Scie di ...

The long, feathery lines of condensation that form behind aircraft, called contrails, have more of an immediate warming effect on the Earth's surface than the carbon dioxide or other greenhouse gases ...