The Classifying Space of a Topological 2-Group.- String Topology in Dimensions Two and Three.- Floer Homotopy Theory, Realizing Chain Complexes by Module Spectra, and Manifolds with Corners.- Relative Chern Characters for Nilpotent Ideals.- Algebraic Differential Characters of Flat Connections with Nilpotent Residues.- Norm Varieties and the Chain Lemma (After Markus Rost).- On the Whitehead Spectrum of the Circle.- Cocycle Categories.- A Survey of Elliptic Cohomology.- On Voevodsky#x0027;s Algebraic -Theory Spectrum.- Chern Character, Loop Spaces and Derived Algebraic Geometry.- Voevodsky#x0027;s Lectures on Motivic Cohomology 2000/2001.