Business Green: The latest round of UN climate talks opened in Bonn, Germany yesterday amidst optimism that the Obama administration’s first attendance at the negotiating table would provide renewed impetus to the stalling process. Speaking at the opening of the conference, which is the latest in a series of talks attended by 175 nations and intended to lay the ground work for an international climate change deal in Copenhagen in December, the US special envoy for climate change Todd Stern struck a …