A couple looks at their flooded street from behind their home&#39;s window in La Plata, in Argentina&#39;s Buenos Aires province, Wednesday, 3 April 2013. At least 35 people were killed by flooding overnight in Argentina&#39;s Buenos Aires province, the governor said Wednesday, bringing the overall death toll from days of torrential rains to at least 57 and leaving large stretches of the provincial capital under water. Photo: AP