A brain freeze is an intense ‘squeezing’ sensation on your head. Nina Maile Gordon/The Conversation

Curious Kids: what is brain freeze?

There are several different science ideas around why, but the answer may have something to do with what happens when we cool down the roof of our mouth.
A headache is not from your brain itself hurting, but it might mean some of the muscles, membranes and tissues surrounding the brain or its blood supply system could be hurting. Shutterstock

Curious Kids: what is a headache? Is it our brain hurting?

The brain itself can’t actually feel pain. It can’t sense damage to itself the way your finger can. We know this because people can have brain surgery while they are totally awake.
Your brain is about 70% water. Shutterstock

Curious Kids: how much does a brain weigh?

An adult brain weighs about 1.5kg. It’s mostly water with some fat, protein, sugar and a dash of salt. Sounds like pancakes, I know, but I once tried chicken brains and, well, pancakes are tastier.
Statistics has Guinness to thank for the Student’s t-test. Flickr/Scott Thompson

The genius at Guinness and his statistical legacy

A statistical method widely used today by scientists and others is all thanks to a statistician at a Guinness brewery whose work was published anonymously more than a century ago.

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