Brazil mounts frantic rescue effort as flooding kills 66

Authorities in southern Brazil raced against the clock on Sunday to rescue people from raging floods and mudslides that have killed at least 66 and forced more than 80,000 to flee their homes.

Across Porto Alegre, the capital city of Rio Grande do Sul state, people stood on rooftops hoping to be rescued, while others in canoes or small boats navigated streets that had turned into rivers.

Civil defence officials said at least 101 people were missing in the latest in a string of catastrophic...