¹ Bartol Research Institute, Department of Physics & Astronomy, University of Delaware, Newark, DE 19716, USA

To what extent can pulsational instabilities resolve the mass-loss problem of massive stars? How important is pulsation in structuring and modulating the winds of these stars? What role does pulsation play in redistributing angular momentum in massive stars? Although I cannot offer answers to these questions, I hope at the very least to explain how they come to be asked.

To appear in proceedings of "Unsolved Problems in Stellar Physics" conference (Cambridge, UK, July 2007)
Preprints from rhdt@bartol.udel.edu
or on the web at http://arxiv.org/abs/0709.0761