Marcus Chown is an award-winning writer, journalist and broadcaster, currently cosmology consultant for New Scientist magazine. He graduated from the University of London in 1980, gaining a first class degree in physics, and later gained a Master of Science in astrophysics from the California Institute of Technology. His books on astronomy and physics are aimed primarily at the popular market, including 'Quantum Theory Cannot Hurt You', 'The Never-Ending Days of Being Dead: Dispatches from the Front Line of Science', and 'We Need to Talk About Kelvin' for which he was praised for "expressing opaque concepts with a unique clarity". We are delighted to have him at the Salon at The National Theatre to explain Cosmology.