Karl Landsteiner Karl Landsteiner Karl Landsteiner, , (14 June 1868 – 26 June 1943) was an Austrian biologist, physician, and immunologist. He distinguished the main blood groups in 1900, having developed the modern system of classification of blood groups from his identification of the presence of agglutinins in the blood, and identified, with Alexander S. Wiener, the Rhesus factor, in 1937, thus enabling physicians to transfuse blood without endangering the patient's life. With Constantin Levaditi and Erwin Popper, he discovered the polio virus in 1909. He received the Aronson Prize in 1926. In 1930, he received the Nobel Prize in Physiology or
2001 Nobel Peace Prize 2001 Nobel Peace Prize The 2001 Nobel Peace Prize was awarded to the United Nations and Kofi Annan for "their work for a better organized and more peaceful world". In 2001, its centennial year, the Nobel Committee decided that the Peace Prize was to be divided between the United Nations (UN) and Kofi Annan. Annan was awarded the Peace Prize for having revitalized the UN and for having given priority to human rights. The Nobel Committee also recognized his commitment to the struggle to contain the spreading of the HIV virus in Africa and his declared opposition to international terrorism.