PETRA WISCHGOLL and DAVID SAHL RESCUE workers have continued to search flood-ravaged parts of Germany and Belgium for survivors after burst rivers and flash floods this week collapsed houses and claimed at least 157 lives. "We mourn with those that have lost friends, acquaintances, family members," German President Frank-Walter Steinmeier said during a visit to Erftstadt in the state of North Rhine-Westphalia, where the disaster killed at least 43 people "Their fate is ripping our hearts apart." Some 133 people have died in the flooding in western Germany, the country's worst natural disaster in more than half a century. That…