Watch a video clip of the awarding of the 2010 Nobel Peace Prize medal and diploma to Liu Xiaobo at the Oslo City Hall in Norway, 10 December 2010. As the Laureate was absent, the medal and diploma were placed on an empty chair.
See the list of all Nobel Prizes, awarded for "the greatest benefit to mankind."
In his will, Alfred Nobel left 31 million SEK to found the Nobel Prizes.
Medicine Laureate Shinya Yamanaka talks about the importance of taking risks.