What is fracking?

Fracking is a nickname for hydraulic fracturing, a controversial process used to obtain reserves of natural gas deep below Earth’s…

What is coral bleaching?

Coral is made of many tiny organisms called polyps. These soft-bodied animals are related to jellyfish and sea anemones and…

Does sugar make children hyperactive?

It’s accepted wisdom that consuming too much sugar will make children hyperactive, and many parents will tell you of occasions…

What was the Tully monster?

In 1958 fossil collector Francis Tully made a peculiar discovery south-west of Chicago, Illinois. Dating from 307 million years ago,…

What causes ‘pins and needles’?

This question was asked by Hannah from West Sussex, UK.  The medical name for the sensation we call pins and…