  In the strong magnetic field fractional quantum Hall regime, electrons in a
two-dimensional electron system are confined to their lowest Landau level.
Because of the macroscopic Landau level degeneracy nearly all physical
properties at low energies and temperatures are then entirely determined by
electron-electron interactions. The properties of these non-Fermi-liquid
electronic systems continue to surprise. In this article we briefly survey some
recent advances in the physics of the fractional Hall regime.
