I missed this interesting sidelight to the Nobel prizes, but my wife pointed it out to me.
Vernon Smith is putting his share of the prizemoney back into research

As if to prove his point [that people are innately co-operative], Mr Smith, in a crass display of economic irrationality, has announced he would not keep his share of the $US1.07 million prize money.
Irrational, but perhaps not totally unselfish: the money is to go into research, which as Mr Smith mischievously remarked, is a way of giving it back to himself.