Author: Ailsa Harvey

What is airglow?

The science behind the phenomena that causes the sky to glow in a rainbow of colours (Image credit: European Southern Observatory) Airglow is a photochemical reaction in the Earth’s atmosphere caused by electronically excited...

What did the Tudors eat?

Question from Kevin Watson Tudor England was generally selfsufficient, not needing to rely on imports. People ate a lot of fresh food because storing food was difficult. Even peasants had small pieces of land,...

Golf ball anatomy

Professional balls are specially engineered to maximise your game At their simplest, golf balls are made from a single layer of scratch-resistant resin. These basic balls are hard wearing and fly long distances through...

Gut feeling: Exploring the gut-brain axis

How does the bacteria in your gut act like a ‘second brain’? Scientists are only just beginning to understand the impact your microbiome can have on your brain We all know that our mood...

How do double glazing and triple glazing compare?

Find out how glass insulation keeps homes warm throughout winter Modern double-glazed windows consist of two layers of glass bonded together in one frame, allowing for better insulation and fewer drafts, meaning cheaper heating...

How can we eat certain meats raw?

Question from Eduardo Raffaele Like us, animals carry microbes, most of which live on the skin or in the digestive system. Whole cuts of beef tend to be safe to eat rare because their...