In the 1940s, flight hit a wall—the sound barrier. This is the story of how the U.S. X-plane program shattered it. From deadly high-speed dives to the rocket-powered X-1, discover how Chuck Yeager and ...

When legendary pilot Chuck Yeager broke the sound barrier and flew the Bell X-1 past Mach 1 in 1947, it was the greatest aviation milestone ever achieved at that time. These days, however, reaching ...

To be a good listener, you've got to be interested in what the speaker is saying. And you need to hear well. If your sense of hearing is weakening, you're likely to first notice it during ...

The defining element of a defining technology -- The winding path to the Wright brothers -- Reinventing the airplane -- Breaking the sound barrier -- The supersonic design revolution -- The rise and ...

Email notifications are only sent once a day, and only if there are new matching items. The 1960s were a formative time for the recording of music, popular and otherwise. The arrival of multitrack ...