Analysis: 2009 Nobel Prize

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With the revelation of this year's Nobel Prize winners, the selections remain a hot topic.

That's not only because of the award's social influence, but also the number of surprise choices. Now looks at the prominent features of this year's Nobel Prizes.

Elizabeth Blackburn, Carol Greider, winners for medicine.

Ada Yonath for chemistry.

Herta Muller for literature.

And Elinor Ostrom for economics.

Women featured prominently, this year, with a new peak in laureates.

The previous record was in 2004, when three women received the honor.

Another key word is "US"

11 of the 13 winners are American citizens.

The excitement of the unexpected is being shared among Chinese, with Charles Kao as one of the winners for physics.