The Human Body

Why do they sterilise lethal injection needles? © iStock

Why do they sterilise lethal injection needles?

How did people deal with pain before anaesthetics? © Getty Images

How did people deal with pain before anaesthetics?

Can a smell wake you up? © iStock

Can a smell wake you up?

Is it safe to eat yoghurt after the best before date? © Getty Images

Is it safe to eat yoghurt past its best-before date?

Why do some humans have a cast iron stomach? © Getty Images

Why do only some people have ‘cast-iron stomachs’?

Are food cravings ever targeted at the nutrients we actually need? © iStock

Are food cravings ever targeted at the nutrients we actually need?

What is the blood-brain barrier? © Getty Images

What is the blood-brain barrier?

Why do old men go bald, but get hairy nostrils? © Getty Images

Why do old men go bald, but get hairy nostrils?

Are we born with full-sized eyeballs or brains? © Getty Images

Are we born with full-sized eyeballs or brains?

Are we descended from Neanderthals? © iStock

Are we descended from Neanderthals?

Gay genetics

Gay genetics

As far as I can remember © Getty Images

As far as I can remember

Sleepless in battle © Getty Images

Sleepless in battle

The deadly rise of depression © Getty Images

The deadly rise of depression