How It Works issue 42 free preview!

This month How It Works delivers a bounty of awesome articles and fantastic features including:

Outbreak – We reveal all you need to know about the science of pandemics and how they can be stopped.

Stealth warships – Find out how a massive battleship can have the radar signature of a small fishing boat

Recycling tech – Just what happens to your cans, plastic and glass after they are taken away by refuse collectors?

Horse power – Examine the anatomy and behaviour of the horse and find out what life in the herd is really like.

Supergalaxies – Learn all about galaxy clusters and superclusters – the largest structures in the universe.

Tyrannosaurus rex – Look back at the life of one of the most terrifying prehistoric predators.

How It Works issue 42 is on sale from 27 December 2012 and is available from WHSmiths, Barnes & Noble, supermarkets and all good newsagents.