Most bullets make small sonic booms when flying through the air, which to our ears sound like a loud, distinct “crack!” For the Pentagon’s special forces, that makes it hard to be sneaky about what ...

As I switch on my phone to record the sound of the wind in the tall salt-reed grass, I think of other sounds around me, some of which the phone will be able to catch and those it wouldn’t. I want to ...

If you’ve ever been out in the New Zealand wilderness, you might have heard a distinctive, low-frequency tone. It sounds less like an animal than the kick on an electronic drum machine. A look through ...