question: u.n. secretary general ban ki-moon has appealed to president obama to attend a hastily planned summit here in late march to promote international efforts to stem the pace of climate change , according to senior u.n. officials and delegates .

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summary: u.n. chief wants obama at climate change summit

question: gareth parker , a northern irish tennis international , died in hospital here on tuesday after being viciously attacked by a local gang .

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summary: young tennis player dies after gang attack

question: judges and lawyers in bangladesh demanded extra security thursday after fresh threats from islamic militants suspected to be involved in this week 's bombings of court buildings .

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summary: security stepped up at bangladesh courts after new threats

question: an agreement thursday between unions and management at australian flag-carrier qantas over a long-running pay dispute has averted the threat of flight disruption .

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summary:
qantas and unions resolve pay dispute and avert strike threat