Noise-canceling headsets: How they work and which to get

A comparison of the best: the Sennheiser and the Bose

Ready for a nice, relaxing airplane ride? You climb into your hard plush seat, fasten the safety belt, pull out a magazine or book and then, as you start the ascent into several hours locked in place, there comes a steady, all-encompassing roaaarrrr! And it won‘t go away. Not while the engines are turning, since that‘s the price of air travel. Or is it?