Headlines don't get much punchier than "All mammals poop in 12 seconds ...".

There's a lot of maths - and a bit of astronomy - behind the sideways swing of a ponytail.

It kills millions, and it costs trillions. Air pollution is killer number 5

Compared to other animals of the same size, humans just aren't that nutritious. Is that the only thing holding cannibalism back?

Can a woman get pregnant, when she is already pregnant? In other words, can she have two foetuses in her uterus, at different stages of development?

The amount of junk in orbit is always increasing but cleaning it up is also essential for our future space operations, but it’s not going to be easy.

Space junk includes old satellites, spent rocket stages, dust from solid rocket motors and even coolant from obsolete Russian nuclear-powered satellites. But just how much is up there?

The gold in a Nobel Prize medal is dense enough to make a big impression when you try to take it through an airport X-ray scanner. It's also very resistant to being dissolved—but that didn't stop one chemist who needed to hide two medals from the Nazis, as Dr Karl Kruszelnicki explains.

A condition called misophonia — where people adversely react to particular sounds, often with feelings of rage, terror, fear and panic — was first identified 20 years ago, but is only now starting to be better understood.

They can seal tight, suck, blow, whistle, hold and kiss. With hundreds of muscles and multiple layers of cells, the human lip serves a much greater role than we give them credit for.