Abstract: Perhaps more importantly than the observation of characteristic signatures of one-dimensional physics, the reports of anomalies in the transport properties of quantum wires focused a lot of attention on these systems. From the theoretical point of view, these results initiated various attempts to study the effects of electron-electron interactions on the transport properties of one-dimensional conductors. In this talk, I will explain how non-uniform interactions along the wire may lead to substantial contributions to the transport properties. I will show that these inhomogeneities of the system lead to a finite resistivity associated with electron-electron scattering processes which weakly violate the momentum conservation. Using an alternative approach compatible with the bosonization formalism, I will compare these results to previous works relying on an extension of the Tomonaga-Luttinger model to inhomogeneous systems.