The area near clouds is often classified as ‘clear sky’, but a new study demonstrates the potential biases of misclassifying ...

Ever wondered about the white lines stretching across the sky? These are contrails—condensation trails formed by aircraft engines. While they might seem harmless, they play a role in climate change ...

One of the most prominent points of confusion is the white lines that are often seen from the ground trailing behind in-flight jets. Seeing white streaks across the sky emanating from a jet is normal.