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How do plasma balls work?

This question was asked by Hollie from Plymouth, UK.  Plasma is sometimes known as the fourth state of matter; it…

Why do humans have hair?

This question was asked by Immy from Mersey Vale school, Stockport, UK.  Millions of years ago our ancestors were covered…

What is Galaxy Zoo?

In some areas of scientific study, producing data isn’t a problem; it’s analysing it all that can be difficult. Astronomy…

Why do we get goosebumps?

This question was asked by Pauline from Edinburgh, UK.  Goosebumps, also known as goose pimples or goose flesh, are called…

What is the placebo effect?

Put simply, a placebo is something that seems to be a medical treatment but isn’t. Sugar pills are one of…

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…