Fear of flying is quite common. As many as one in four people are thought to have it, or at least suffer a feeling of unease. It's clinically an issue for only about 10% of them though, in which case ...

The American plane was being towed when the wings clipped one another. Passengers on the Frontier flight told WBZ-TV ... Most involved planes clipping one another or nearly colliding.

"Feathers are complex structures that have a really well-defined developmental sequence that's hard to change. And when birds lose flight, those feather features disappear in the opposite order ...