Preface; 1. On the computational complexity of rational homotopy D. J. Anick; 2. Segal's Burnside ring conjecture and the homotopy limit problem Gunnar Carlsson; 3. Pseudo-isotopies, K-theory, and homotopy theory Ralph L. Cohen; 4. Global methods in homotopy theory Michael J. Hopkins; 5. Sur la cohomologie modulo p des p-groupes Abeliens elementaires J. Lannes; 6. A view of some aspects of unstable homotopy theory since 1950 J. C. Moore and J. A. Neisendorfer; 7. Recent progress in stable splittings Stewart Priddy; 8. Localization and periodicity in homotopy theory Douglas C. Ravenel; 9. Symbolic calculus: a 19th century approach to MU and BP Nigel Ray; 10. An outline of how manifolds relate to algebraic K-theory Friedhelm Waldhausen.