Six people are arrested in a multi-state rhino horn-smuggling ring, as officials seize $1m (£637,000) in gold ingots and 20 rhino horns.

US President Barack Obama says there is no "silver bullet" to bring car fuel prices down quickly and defends his energy policy.

New research suggests mild drought conditions were enough to cause the collapse of the Central American Maya civilisation after 950AD.

The senate in the US state of Maryland passes a gay marriage bill, making it the eighth US state assembly to approve such a measure.

A court hearing into the 1980 disappearance of baby Azaria Chamberlain, whose parents claim she was killed by a dingo, is to re-open in Australia.

Tunisia is set to host a major conference to seek a breakthrough in Syria, with fresh pressure on Damascus to allow humanitarian access.

Kevin Rudd will challenge Prime Minister Julia Gillard in the Australia Labor party leadership ballot on Monday, he has confirmed.

Gunmen attack a police station in north-western Pakistan, killing at least three policemen and injuring seven others, officials say.