Category: Brain Dump

Can you injure yourself by stretching?

(Image source: Pixabay) Question from Imre Sebestyén We all know how enjoyable it is to have a good stretch when we get out of bed in the morning. As well as being rewarding, stretching...

What are saturn’s rings made of?

They may not be as interesting as the moons around Uranus but Saturn’s rings do bear further investigation… Saturn – The Roche lobe causes gravitational forces around Saturn to hold rocky particles Inner rings...

Why do our eyes close when we sneeze?

(Image source: Pexels) Question from Ashley Morgan Sneezing happens for all manner of reasons. Your nose is extremely sensitive so when it is exposed to a change in temperature or small allergic particles like...

What are ‘the bends’?

(Image credit: Mael Balland/ Unsplash)  Question from Howard Salazar Not nice, that’s for sure! Although it’s the oxygen in the air we need to live, air is mostly nitrogen. Normally nitrogen dissolves in our...

How were books printed before computers?

(Image source: Pixabay) Question from Efan Irvine Early printed books were made using a manual printing press. Each page of the book was ‘typeset’ by arranging metal letters, or ‘type’, into words and lines...

What causes fire rainbows?

(Image credit: Guillaume Piolle) Question from Isla Jenkins Fire rainbows are so called because the wispy clouds look like bright flames licking the sky.  Officially known as circumhorizontal arcs, they only occur in very specific conditions,...

Why are children such fussy eaters?

(Image source: Pixabay) Question from Joel Francis Fussiness in childhood probably helped to keep our ancestors safe. You only have to look at the huge variety of foods consumed across the world to see...

Can parasites get parasites?

Ticks are parasites which can be targeted by other, smaller ticks (Image source: Pixabay) Question from Abdul Khan Parasites that infest other parasites are called ‘hyperparasites’. Take crypt-keeper wasps, for example. They parasitise gall...