The best white noise machines mask distractions, use screen-free controls, and offer white, pink, and brown noise options to lull you to sleep.

From whale songs to lion roars, animals have evolved to stretch their voices across distances so that friends—and sometimes foes—can hear them. Each sound is coded with messages like "Come here!" ...

At the end of the act, the audience let out an animal roar. You sometimes hear that in an opera house. And when you do, it’s thrilling. When Nézet-Séguin returned for Act II, he received a rapturous ...