Nobel Peace Prize
The Nobel Peace Prize is one of the five Nobel Prizes; it is awarded in Norway. The other four, awarded in Sweden, are in Physics, Chemistry, Physiology or Medicine and Literature. Each laureate receives a gold medal, a diploma and a quantity of money.
The Nobel Peace Prize is awarded by a committee of five persons who are chosen by the Norwegian Parliament. It has been awarded 91 times to 121 Nobel Laureates between 1901 and 2010. President Jimmy Carter won the award in 2002, and Nelson Mandela in 1993, together with Frederik Willem de Klerk.
Peace was the fifth and final prize area that Alfred Nobel mentioned in his will:
“The said interest shall be divided into five equal parts, which shall be apportioned as follows: /- - -/ one part to the person who shall have done the most or the best work for fraternity between nations, the abolition or reduction of standing armies and for the holding and promotion of peace congresses.” (Excerpt from the will of Alfred Nobel written in 1895.) 
For the 2011 Nobel Peace Prize:
The Norwegian Nobel Committee has received 241 valid nominations, among them, 188 individuals and 53 organizations. This is the highest number of nominations ever received. The previous record was 237 different candidates, in 2010.