The end of life is steeped in mystery and is generally poorly understood by the public, for instance, precisely how long does a death rattle last?

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 ...