Neil Turok is one of the world’s leading theoretical physicists. Formerly Professor of Physics at Princeton and Chair of Mathematical Physics at Cambridge, he is Director and Niels Bohr Chair at Perimeter Institute for Theoretical Physics in Waterloo, Canada. Turok’s research focuses on developing fundamental theories of cosmology and new observational tests. His predictions for the correlations of the polarization and temperature of the cosmic background radiation (CBR) and of the galaxy-CBR correlations induced by dark energy have been recently confirmed. With Stephen Hawking, he discovered instanton solutions describing the birth of inflationary universes. With Paul Steinhardt, he developed an alternative, cyclic cosmology, whose predictions are so far in agreement with observational tests. Turok founded the African Institute for Mathematical Sciences (AIMS), a network of five centres across Africa. For his scientific discoveries and his work founding and developing AIMS, Turok was awarded a TED Prize in 2008.