Science

Human testicles are much smaller, in proportion, to some of our primate cousins. Evolution can tell us why. But the size of other body parts is a little bit more of a mystery.

Honey is a natural sweetener, and bacteria loves to feast on sugar. But honey is remarkably resistant to spoilage. What's behind its ability to beat the bugs?

From tropical parasites to bacterial pathogens, here's what else might be swimming in the water.

Here's what the experts say about the benefits and risks of veganism in childhood.

Some cats are quiet, while others meow loudly for attention. What makes the difference may be buried deep in their genes.

More than a century after colonisation, the Ainu language almost vanished. Now machines are listening to hours of old recordings and learning to give it a new voice.

Before the internet took over the world, psychedelic rock band The Grateful Dead were among the first – and most influential – forces at the dawn of online communication.

The question of whether siblings' birth order shapes their personality has puzzled families and psychologists for years. What does the evidence say?