Your teacher may once have told you that there's no such thing as a stupid question. They probably instantly regretted it, as anyone who has ever been around a group of teenagers will know that there definitely is such thing as a stupid question. However, not all stupid questions are created equal, some stupid questions actually have surprisingly clever answers. More often than not, these are just those things that you come across in everyday life and it never even occurs to you to question them. Luckily, that's what we have scientists for. They've been busily beavering away, answering the questions that we'd never even think to ask. Ever wondered what babies dream about, what trees are made of or what actually happens to your belly fat when you go on a diet? If you weren't wondering before, you might be now.