Business Green: Green groups have today urged bickering delegates at the UN biodiversity summit in Japan to step up efforts to deliver a global deal to halt the rapid decline of crucial ecosystems. As ministers from around the world begin to arrive in Nagoya for the summit’s critical final week both Greenpeace and WWF warned that the first half of the Convention on Biological Diversity (CBD) made little progress with on negotiations on some key issues appearing to drift backwards. “Last week …