Sir Joseph Rotblat (4 November 1908 - 31 August 2005) was a Polish-born British-naturalised physicist and critic of the nuclear arms race. His work on nuclear fall-out was a major contribution to the agreement of the Partial Test Ban Treaty. A signatory of the Russell-Einstein manifesto, he was secretary general of the Pugwash Conferences on “Science” and “World Affairs.” In conjunction with the Pugwash Conferences, he received the Nobel Peace Prize in 1995 for their efforts towards nuclear disarmament.
Despite the Iron Curtain and the Cold War, he advocated establishing links between scientists from the West and East. He was president of the Pugwash conferences from 1988 to 2004. Rotblat was appointed CBE in 1965 and knighted a KCMG in 1998. He won the Albert Einstein Peace Prize in 1992 and was elected a Fellow of the Royal Society in 1995.
Rotblat was also Editor-in-Chief of the journal “Physics in Medicine and Biology” and president of several institutions and professional associations. He was co-founder and member of governing board of the Stockholm International Peace Research Institute and a member of the Advisory Committee on Medical Research of the World Health Organization.
Source - Wikipedia http://en.wikipedia.org/wiki/Joseph_Rotblat