Agence France-Presse: The city of Copenhagen, which will host a UN climate conference in December, aims to become the world’s first carbon neutral capital in 2025, city officials said on Thursday. Copenhagen aims to reduce carbon dioxide emissions by 20 percent by 2015 and be carbon neutral by 2025 by increasing the use of renewable energies. “It’s an ambitious plan, but we want to accomplish our goal in order to help stop global warming by significantly reducing CO2 emissions,” the deputy mayor in …