Germany's environment minister has added his voice to green activists and others who have sought to link Hurricane Katrina with global warming. "The increasing frequency of these natural events can only be explained through global warming which is caused by people," Juergen Trittin told the ZDF television network. Trittin, a member of the Green Party in Chancellor Gerhard Schroeder's ruling coalition, was also quoted by the Frankfurter Rundschau newspaper as criticizing the Bush administration for doing little to fight climate change. Germany is a strong supporter of the Kyoto Protocol, a treaty that came into force last February. The pact...