Toothpaste comes in all sorts of flavours, colours and sizes at the supermarket, but one thing they all have in common is that you can't put the disposable tube in your kerbside recycling bin. So if ...

Does your toothpaste dribble from your mouth? Does it park quietly on your toothbrush? Does it feel gritty on your teeth? There is strong science in making toothpaste. Toothpaste is a solid, but an ...