Engineering

Supersonic travel, without the sonic boom

Supersonic aircraft generate a series of shock waves that merge into two distinct booms. The planes drag these incredibly loud sounds along their flight path, creating unacceptable noise levels over land. So far, sonic booms ...

Automotive

Tesla driver killed in fiery crash hit 90 mph, report says

The Tesla driver who died with a passenger in a fiery September crash near Miami accelerated to 90 mph (145 kph) in the seconds before he lost control and smashed into trees, federal investigators said Wednesday—a conclusion ...

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