My research interests include topics at the interface of particle physics and cosmology. I am searching for answers to fundamental questions about the origins of the Universe, drawing on discoveries in quantum gravity and superstring theory. I am particularly interested in finding evidence of new physics in cosmological data from the cosmic microwave background radiation and large scale structure observations. Current research projects include: inflationary model building, discovering the nature of dark energy, modified gravity and the accelerating Universe, implications of extra dimensions of space, dark matter and quantum aspects of black holes.