What do David Cameron, a Middle Eastern bazaar and a woman batting her eyelids all have in common? You need to read their body language in order to understand them. Election campaigning, haggling and flirting are all negotiations — and they all begin with people saying the opposite of what they will do in the end. Although some people and some computers (and even one horse) seem to read body language incredibly accurately, the science behind understanding intrinsic communication is still not solved. Neither man nor beast (nor computer) can tell us how they arrive at their conclusions. In this talk Dr Harry Witchel — a psychobiologist who measures body language and a BBC body language expert — shows some beautiful examples of how people express themselves with body language. Finally, a simple set of questions is presented for how we might be able to scientifically structure what we see so that anyone might be able to read these secret signals. Harry Witchel's Website: www.harrywitchel.com/ Oxford University Scientific Society website: users.ox.ac.uk/~science/ OUSS Facebook: www.facebook.com/OUSciSoc