Hamburg, the largest non-capital city in the European Union, has warned that it could ration be forced to hot water as the Russian energy crisis causes chaos.Jens Kerstan, environment senator for Germany's second biggest city, told German newspaper Welt am Sonntag on Saturday that Hamburg could restrict availability of hot water to certain times of days "in an acute gas shortage.""We are in a much worse crisis than most people realize," Kerstan said in a separate interview with the Hamburger Abendblatt on Sunday. He urged people to take shorter showers, avoid full baths, and install modern thermostats and water-saving shower...