You might have noticed, over the last several years, headphones called "open back." What does that mean, and how does it compare to "closed back" headphones?
The Airbus A220 is a popular single-aisle airliner designed to replace various other aging aircraft, but it wasn't an easy path to success for this plane.
Did you know you can get store credit toward a new smartphone by trading in your old Android? Here are five ways to do it, as well as the pros and cons.