File photo. Boom Supersonic plans to build a supersonic airliner called Overture that could travel from New York to Rome in just four hours and 40 minutes, instead of eight hours. (Boom Supersonic ...

There were more sighs of relief than “I told you so” in the aftermath of Boom Supersonic’s XB-1 prototype aircraft breaking the sound barrier Jan. 28 on its initial three attempts.

In the early 1800s, a Swiss explorer tricked his way into Petra, the ancient oasis whose location had ... Any false move could have blown his cover, putting his mission, and perhaps his life ...

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