Neil Geoffrey Turok holds the Chair of Mathematical Physics (1967) at Cambridge University. He was born in 1958 in Johannesburg, South Africa, the son of Mary and Ben Turok, activists in the anti-apartheid movement and the African National Congress.
Max Tegmark (born 5 May 1967) is a Swedish-American cosmologist. Tegmark is an Associate Professor at the Massachusetts Institute of Technology where he belongs to the scientific directorate of the Foundational Questions Institute. Currently, he also teaches a relativity class (8.033) to undergraduates at MIT.
Last week the free and open access repository for scientific (mainly physics but also math, computer sciences...) papers arXiv got past 500,000 different papers, not counting older versions of the same article. Especially for physicists, it is the number-one resource for the latest scientific results. Most researchers publish their papers on arXiv before they are published in a 'normal' journal. A famous example is Grisha Perelman, who published his award-winning paper exclusively on arXiv.