PRAGUE (Reuters) - Emergency workers scrambled through Tuesday night to reinforce sandbag walls protecting the entrances to Prague's Old Town Square, as rising flood waters forced the evacuation of more than 50,000 people. Torrential rains and floods from Germany to Russia have killed more than 70 people in a week. Hundreds more have died in monsoon floods in South Asia. Rising rivers flooded the historic city of Dresden, and Salzburg was threatened by the floodwaters that have brought death and destruction to whole swathes of the continent at the height of the summer tourist season. In Prague, more than 50,000...
