Agence France-Presse: UN Secretary General Ban Ki-moon urged the European Union on Friday to set an example to the rest of the world and maintain its climate change goals despite the global economic downturn. European Union leaders have came under pressure to roll back their climate-change plans as the global financial crisis bites. “One crisis must not become an obstacle to action on another,” Ban said in a statement. The European Union, he said, “should continue to provide leadership on …