Paul Krugman (L), American economist and the winner of the 2008 Nobel Prize in economics, Roger Y. Tsien (C), American chemist and the winner of the 2008 Nobel Prize in chemistry, and Martin Chalfie, American chemist and the winner of the 2008 Nobel Prize in chemistry, attend a news conference in Stockholm, Sweden, on Dec. 7, 2008. Six of the 2008 Nobel Prize winners in physics, chemistry and economics, except Yoichiro Nambu, the winner of Nobel Prize in physics caring about his own age, attended the news conference here during the 2008 Noble week. All the Nobel Prize Laureates will receive their Nobel Prize during the Nobel award ceremony in Stockholm on Wednesday Dec. 10, 2008.[Xinhua]