It’s a chilling sound you might never want to hear, but it could signal that someone has less than 24 hours left to live. It’s called the “death rattle,” and it’s enough to make anyone’s blood run ...

It’s the sound no one warns you about – but once you hear it, you never forget it. Known as the “death rattle,” the sound is a “biological lullaby” – a sign that within 23 hours, the body will fall ...

With their signature noisy tails, rattlesnakes have often captured people’s imagination, in books and movies, or in the wild. “Nobody is apathetic about rattlesnakes,” said Jimmy Stiles, a biologist ...