Human evolution

Why do we have body odour?

We’ve had smelly armpits since before we evolved into modern humans
People spend million every year on covering up their body odour and it's something that we all experience from time to time. But why do our armpits smell? Scientists have now discovered that the smell has been around since before we evolved into modern humans, and that it's caused by a unique enzyme.

Dr Michelle Rudden from the Univeristy of York explains what the research has uncovered.

(Photo: Man smelling his armpit Credit: Getty Images)

Innies and outies - the wonder of the human belly button

BBC Ideas explores the wonder of the human belly button
Whether you have an innie or an outie, you definitely have one. So, here's everything you might ever want to know about the belly button.

What’s the point of noses?

BBC Ideas explores the evolutionary purpose of noses
We all have noses. But what's the point of them? And why do they stick out? A quick look at the evolution, history and science of the human nose.