(Reuters) — At least six people were killed in storms that swept Germany’s most populous state late on Monday, forcing Duesseldorf airport to shut down, with falling trees leaving some roads impassable. After a scorching hot three-day holiday weekend, thunderstorms, strong winds and heavy rain pounded the western state of North Rhine-Westphalia, causing Germany’s third-largest airport in Duesseldorf to close for about an hour. Three people were reported to have died in the state capital […]