Carnival festivals have taken over Rio de
Janeiro and transformed the streets into a riot of colour as revellers
dance and drink at block parties with names like 'fire in the
underpants'.
Over
six million people, including 1.5 million visitors, are expected to
take to the streets of Rio for the annual celebrations, which pit the
city's 13 best samba schools against one another in ornate parades that
can cost over $2million (£1.4million)...
