  We discuss some recent results on black hole thermodynamics within the
context of effective gravitational actions including higher-curvature
interactions. Wald's derivation of the First Law demonstrates that black hole
entropy can always be expressed as a local geometric density integrated over a
space-like cross-section of the horizon. In certain cases, it can also be shown
that these entropy expressions satisfy a Second Law. One such simple example is
considered from the class of higher curvature theories where the Lagrangian
consists of a polynomial in the Ricci scalar.
