The Villarrica volcano, one of Chile's most active, began erupting around 3am, prompting authorities to declare a red alert.
Supporters of Argentine President Cristina Kirchner have flooded the streets around Congress for her final opening address before the legislature.
Argentina's Chamber of Deputies has voted 131 to 71 to create a new intelligence service to be known as the Federal Intelligence Agency.
Brazil has refused to accept the credentials of the new Indonesian ambassador over the execution of one of its nationals - so Indonesia has recalled him.
The US has rubbished the claim by Venezuela's President Nicolas Maduro that the US was planning a coup to oust the socialist president.
Three men have died after the Carnival float they were on hit a power line in a southeastern Brazilian city.
A project in Peru aims to collect 400,000 litres of water per day for poor people living near the desert by setting up "fog-catchers".
Not even a thunderstorm has been able to dampen the spirits of the thousands of people who have turned out for Carnival festivities in Rio de Janeiro.
Prosecutors have formally accused Argentine President Cristina Kirchner of shielding Iranian officials from prosecution over a bombing at a Jewish centre.
The discovery of a plane wreck in Chile has dredged up painful memories for friends of the 24 people who died in the crash 53 years ago.
Brazil has set up Tinder profiles that respond with advice about the dangers of unprotected sex in an effort to keep Carnival celebrations safe.
The mystery of a flight carrying members of Chile's Green Cross soccer team in 1961 has been solved with plane wreckage found in the Andes
Brazilian police have seized the possessions of Eike Batista, who was once the country's richest man.
Venezuelan President Nicolas Maduro has ordered the state takeover of a supermarket chain, thought to be Dia a Dia.
South America videos
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