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What is the sound barrier, and how is it broken?

In late January 2025, an American company, Boom Supersonic, successfully conducted its first supersonic flight over California. The demonstrator aircraft, XB-1, flew 10% faster than the speed of sound ...

We’ve tested the 3 best noise-canceling headphones on planes, trains and more

Our electronics writer has been testing headphones for years, and he’s picked the three pairs that offer the best noise-canceling tech.

I’ve tested dozens of headphones this year — these open earbuds are my favorites

I’ve tested earbuds and headphones for years. These open earbuds from Shokz, Soundcore and Bose are some of the best you can ...