I think you might be talking about the Nobel Peace Prize?

That is fairly different to the other Nobel prizes. As an example of how different they are, the Noble Peace Prize is awarded by a Norwegian committee[1], whilst the other prizes are awarded by various Swedish committees[2][3][4].

[1] http://en.wikipedia.org/wiki/Norwegian_Nobel_Committee

[2] http://en.wikipedia.org/wiki/Royal_Swedish_Academy_of_Scienc...

[3] http://en.wikipedia.org/wiki/Nobel_Assembly_at_Karolinska_In...

[4] http://en.wikipedia.org/wiki/Swedish_Academy