Bill Gates tops the list of the world's billionaires with his net worth rising to more than $US79 billion.
Israeli PM Benjamin Netanyahu has arrived in the US to argue against a possible nuclear deal with Iran.
A feud between teenage girls on Facebook has boiled over in the US state of Alabama, ending with one of the girls dead and two injured.
Two American astronauts whipped through a third spacewalk outside the International Space Station to rig parking spots for new US space taxis.
A man charged with murdering a New Zealand hospitality worker in far north Queensland is due to appear in court today.
Australia, China and Malaysia are discussing whether to call off the search for Malaysia Airlines flight MH370 and a decision could be made within weeks.
Not too cold, just perfectly freezing, is how emperor penguins like conditions in Antarctica, researchers say.
Thousands of people have marched in Moscow to honour opposition politician Boris Nemtsov, who was shot dead in the Russian capital on Friday night.
Eighteen people have been rescued on Queensland's Gold Coast after a sandbar collapsed in a strong rip which carried some swimmers 100 metres out to sea.
Thousands of people are expected to take to the streets of Moscow to honour opposition politician Boris Nemtsov, who was shot dead on Friday.
An Egyptian court has sentenced the Muslim Brotherhood's top leader, Mohamed Badie, to life in prison, along with 13 other leading figures.
A terror-style death threat has sparked a security alert at the office of an Australian politician in Canberra.
CCTV pictures have emerged of three UK schoolgirls on the Turkish leg of what is believed to have been their journey to join Islamic State in Syria.
Two men have been charged over the murder of a New Zealander in Cairns in far north Queensland.
A two-year-old boy has died and a girl suffered serious injuries after a tree fell on their house east of Melbourne, as severe thunderstorms swept through Victoria.
US lawmakers have rejected a short-term funding bill for homeland security, increasing the threat of a partial agency shutdown.
A leading Russian opposition politician and outspoken critic of President Vladimir Putin has been shot dead on a Moscow street.
People should listen to music for no more than one hour a day to protect their hearing, the World Health Organization suggests.
US actor Leonard Nimoy, who played Mr Spock in the cult sci-fi series Star Trek, has died at the age of 83 in Los Angeles, his family has said. (VIDEO)
The president of Zimbabwe Robert Mugabe has admitted mistakes were made in giving black Zimbabweans land seized from white farmers.