Sahni, VarunShtanov, Yuri2012-03-132012-03-132002-03-21http://hdl.handle.net/11007/1380Traditionally, higher-dimensional cosmological models have sought to pro- vide a description of the fundamental forces in terms of a unifying geometri- cal construction. In this essay we discuss how, in their present incarnation, higher-dimensional ‘braneworld’ models might provide answers to a number of cosmological puzzles including the issue of dark energy and the nature of the big-bang singularityenNew vistasBraneworld cosmologyArticle