--- Djordje Minic --- Intrinsic non-commutativity of closed string theory --- I will discuss various aspects of the recently discovered intrinsic non-commutativity of the zero-mode sector of closed string theory. This talk is based on my joint work with Laurent Freidel and Rob Leigh, available as https://arxiv.org/abs/1706.03305 and https://arxiv.org/abs/1707.00312. ---