  For geometric Lorenz attractors (including the classical Lorenz attractor) we
obtain a greatly simplified proof of the central limit theorem which applies
also to the more general class of codimension two singular hyperbolic
attractors. We also obtain the functional central limit theorem and moment
estimates, as well as iterated versions of these results. A consequence is
deterministic homogenisation (convergence to a stochastic differential
equation) for fast-slow dynamical systems whenever the fast dynamics is
singularly hyperbolic of codimension two.
