Not just hot air — global diplomacy and the search for a successor to the Kyoto Protocol

Every winter the gates of Copenhagen's famous Tivoli Gardens, an old-world amusement park in the city centre, open to officially mark the beginning of the extended Christmas period. This December the twinkling lights of Tivoli will most likely be outshone by COP 15 — the most important global climate change meeting ever — as thousands of diplomats, politicians, business people, environmentalists, media and climate experts from around the globe flock to the Danish capital.