Martin A. Levin is a professor of political science and founding director of the Gordon Public Policy Center at Brandeis University, author of After the Cure: Managing AIDS and other Public Health Crises and co-editor of The New Politics of Policymaking
Mark Sargeant is one of Britain's best chefs and was Gordon Ramsay's right-hand man and co-author for 13 years. He first worked with Gordon Ramsay at Aubergine in 1998 and was Head Chef at Claridge's from 2001 to 2008. He resigned in November 2009 and in June 2011 opened his own restaurant, Rocksalt, together with The Smokehouse, a fish and chip restaurant, in Folkestone. Mark regularly appears on the BBC's Saturday Kitchen and Food Network's Market Kitchen.