We will discuss the physics of magnetically charged black holes. If we have charged massless fermions, there is a large number of effectively two-dimensional fields that give rise to interesting effects. An interesting effect is that they lead to a controllable construction of traversable wormholes without the addition of exotic matter. For the matter of the Standard Model, these wormholes are microscopic. On the other hand, with matter described by a suitable version of the Randall-Sundrum model, they could be traversed by a human.