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Summarize this: the national hockey league postponed the start of play for at least two weeks here on friday , despite a promise from players not to strike this season if games started as scheduled .
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nhl season on hold for two weeks
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Summarize this: four chinese heritage sites were conferred with a world heritage certificate by the united nations educational , scientific and cultural organization -lrb- unesco -rrb- here tuesday .
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four chinese heritage sites conferred world heritage certificate
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Summarize this: pakistan 's disgraced nuclear pioneer abdul qadeer khan had recovered `` satisfactorily '' after surgery for prostate cancer , his doctors said in a report released by the military on saturday .
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pakistan 's nuclear pioneer recovered after cancer surgery