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South Korean news agency Yonhap reported that the flight used the identification number "PRK-615", possibly a symbolic reference to the 15 June North-South Joint Declaration signed in 2000 by the two countries.

In the days that followed, PRK team members stuck to a common theme, speaking in generalities if not platitudes.

The PRK team — its Olympic designation, for People's Republic of Korea — has been pleasant and gracious but reticent to speak publicly, often hurrying through the mixed zone where athletes face the media after competitions.

Known as prk, the gene encodes an enzyme used in photosynthesis that isn’t found in animals.

So you could have Lasik or PRK, only to find that you still need reading glasses.