2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35994We report and comment upon the principal results of an investigation into the evolution of rotating black holes emitting massless scalar radiation via the Hawking process. It is demonstrated that a Kerr black hole evaporating by the emission of scalar radiation will evolve towards a state with $a \approx 0.555M$. If the initial specific angular momentum is larger than this value the hole will spin down to this value; if it is less it will spin up to this value. The addition of higher spin fields to the picture strongly suggests the final asymptotic state of a realistic evaporation process will be characterized by an $a/M = 0$.3 pages (including 3 postscript figures), Latex. Uses mprocl.sty (included). To appear in the proceedings of `The Eighth Marcel Grossmann Meeting on General Relativity', 22-27 June 1997, The Hebrew University, Jerusalem, IsraelGeneral Relativity and Quantum Cosmologytext