Guardian: The mood at the World Business Summit on Climate Change in Copenhagen was framed by Ban Ki-moon’s bold opening address. The UN secretary general said that the smart money was backing a low-carbon economy and described the world’s high-carbon infrastructure a "toxic asset that threatens the entire portfolio of global goods". In December, Copenhagen will host arguably the most important meeting of our time – the negotiation of a post-Kyoto deal on climate change. If successful, this …