Thousands of revellers have joined in the fun at the annual carnival in Rio de Janeiro.
A new dance craze dubbed 'little step' is sweeping Brazil's capital and, some believe, is helping to tackle drug and crime problems.
A series of vicious rapes on public buses in Rio de Janeiro has cast doubt on Brazil's ability to keep its visitors safe.
The International Olympic Committee has sent a clear warning to the organisers of the Rio 2016 Games that "every second counts" after visiting the Brazilian city.
With just over two years to go, the IOC said that a "constant, concerted and integrated effort is required for the successful delivery of the Games and its legacy".
It added: "Although progress is being made, each decision that is postponed and each subsequent delay will have a negative impact on delivery. Total focus and dedication are therefore required."
ITV News' Brazil correspondent Nick Ravenscroft, who was at the news conference, tweeted:
IOC presser re Rio 2016. Time + again say they have been "given assurances" that problems and delays in preparations will be resolved (1/2)
Scepticism from assembled hacks. These sound v much like assurances given re preparations for World Cup. And that's dangerously late. (2/2)
Masked demonstrators broke storefront windows and hurled petrol bombs in Rio de Janeiro last night after a protest by striking teachers turned violent.
The protest started out peacefully with at least 10,000 demonstrators occupying one of Rio's major downtown boulevards.
Teachers have been on strike for better pay, but protesters were also angry at what they see as excessive use of police force on demonstrating teachers a week ago.
Protests took place in dozens of Brazilian cities on Saturday over government corruption, the poor quality of public services, the hosting of the current Conferations Cup and next year's 2014 FIFA World Cup in Brazil.
Protesters trying to reach the Maracana stadium in Rio de Janeiro were fought back with tear gas last night amid some of the largest demonstrations seen in the city for two decades.
Police were prepared for potential disturbances at the stadium, which is hosting the Confederations Cup ahead of the World Cup next year.
Brazilian protesters descended on the National Congress building in the capital Rio de Janeiro last night although there were no reports of serious damage.
Photographs showed scores of protesters on the roof of the building at one stage and police had to use a fire extinguisher to put out a small fire on a window frame.
Police eventually managed to negotiate with protesters to leave the premises, it was reported.
The stadium that was due to host athletics in the 2016 Olympic and Paralympic Games in Rio de Janeiro has been closed indefinitely following problem with its roof.
The safety issue at the Joao Havelange stadium also leaves the city without a major football stadium, since it was standing in for the Maracana stadium that is being renovated for next year's World Cup.
Rio Mayor Eduardo Paes said that structural problems in the roof mean that it poses a potential threat to spectators in windy conditions.
He added that it was "simply not acceptable" for a stadium built just six years ago, and that those responsible would be held to account.