Race against time to rescue Brazil flood victims after dozens killed

Viewed from the air, Porto Alegre, the capital of Rio Grande do Sul state, is completely flooded, with streets waterlogged and the roofs of some houses barely visible. The Guaiba River, which flows through the city of 1.4 million people, reached a record high level of 5.09 meters (16.9 feet), according to the local municipality, well above the historic peak of 4.76 meters that had stood as a record since devastating 1941 floods. The water was still advancing into economically important Porto Alegre and around a hundred other localities...