Learn about the amazing journey your food makes through your body in our feature about human digestion.

Take a trip around the world’s largest cruise ship, the Oasis of the Seas.

Journey to the centre of the Earth with us as we discover what’s inside this planet of ours.

One of Italy’s most iconic landmarks is the Colosseum amphitheatre in Rome. Find out what went on there.

A pack of prehistoric predators are lurking in issue four. Learn all about the most dangerous dinosaurs ever to walk the Earth.

Grab your copy of How It Works issue four, available in all good newsagents and supermarkets from 28 January. And don’t forget, subscribe and you’ll get your essential edutainment fix earlier than the general public. So what are you waiting for? Hit subscribe and ensure you never miss an issue.

Venus flytraps, like the rat-eating carnivorous plant featured in issue two, tend to grow in boggy soil that’s low in nutrients, hence they need to find another source of food to sustain them, namely insects that happen to land on their leaves. These leaves are about eight to 15cm long and are ‘hinged’ along the midline with spiny teeth around the edges. The folding and trapping action is triggered by pressure on six sensitive hairs which, when stimulated will snap the leaf shut in about half a second, although the actual nature of the action is still debated. As well as these sensitive hairs, the leaf also has glands on its surface that secrete a sap which digests the insect’s body. This process takes about ten days, after which the leaf reopens.