As an MEP, Stevenson led an international campaign to raise awareness and secure aid for the victims of radiation in the Semipalatinsk region of Kazakhstan, where the Soviet Union government tested 607 nuclear devices from 1949 to 1990, leaving an appalling legacy of pollution, deprivation, illness and death. He was awarded with an honorary doctorate in Science from the Semey State Medical Academy, State Medical Academy in Semipalatinsk in recognition of his efforts and on his third visit to Kazakhstan in 2003, he was made an honorary citizen of Semipalatinsk.