New accident hits Rio's carnival party

The glittering revelry of Rio de Janeiro's carnival descended into mayhem again on Tuesday when a freak accident struck a float for the second time in two nights.Twelve people were injured when the top level of an elaborate three-story float collapsed under the weight of the brightly costumed dancers atop it, crashing onto the crowded platform below.Police and firefighters rushed to evacuate scantily clad victims from the packed Sambodromo, the elongated stadium that hosts the carnival's headlin