It was 200 times bigger than the one that wiped out the dinosaurs nearly three billion years later.
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Russian President Vladimir Putin is welcoming more than 20 world leaders to the Brics summit.
Russian President Vladimir Putin is welcoming more than 20 world leaders to the Brics summit.
The UN's statement follows reports that multiple Turkish nationals were abducted in Nairobi on Friday.
President Paul Biya, 91, had not been seen in public for six weeks, sparking rumours he had died.
An investigation was launched following reports Bobrisky had served her sentence in a flat outside prison.
South Africa bowler Kagiso Rabada has taken his 300th Test wicket - and here's how he compares to other all-time greats.
Some accuse the president of interfering with the independence of the judiciary - he says it is legal.
Around one in 12 South Sudanese are affected by one of the worst flood seasons of recent years.
Despite the dangers, the transporters of the illicit brew see it as a way out of poverty.