The long article on Dr. Roseblat is at the NY Times
http://www.nytimes.com/2005/09/02/obituaries/02rotblat.html?pagewanted=1If you are unwilling to sign into their page then do a Google search for other biographies.
"Sir Joseph Rotblat, a physicist who was the only scientist to quit working on developing the atomic bomb for moral reasons and who won the Nobel Peace Prize a half-century later for his worldwide campaign to eliminate nuclear weapons, died Wednesday night in London. He was 96.
Joseph Rotblat was born in Warsaw on Nov. 4, 1908, one of seven children of prosperous Jewish parents. He went to work at 15 as an electrician, but managed to pass the entrance exams to University of Warsaw by studying at night.
Dr. Rotblat, a Polish-born physicist, was 87 when the Nobel committee awarded the 1995 peace prize to him and the Pugwash conferences for convening scientists, scholars and, later, political leaders, from both East and West "to diminish the part played by nuclear arms in international politics and in the long run to eliminate such arms."
