Max Tegmark is a professor of physics at Massachusetts Institute of Technology, focused on astrophysics and cosmology. A native of Sweden, he did his graduate work at University of California, Berkeley. Subsequently he worked at the Max-Planck-Institut für Physik in Munich and, as a Hubble Fellow, was a member of the Institute for Advanced Study, Princeton. He taught at the University of Pennsylvania, where he was tenured in 2003. In 2004 he joined the MIT faculty. His work in “precision cosmology,” combining theoretical work with new measurements to place sharp constraints on cosmological models and their free parameters, has been honored. In 2003 he shared the first prize in Science magazine’s “Breakthrough of the Year” award. He is widely published, not just in academic journals but in Scientific American, BBC, Science, and Huffington Post.