Life as a greenie in Hong Kong, not perhaps the world's most environmentally aware city, is more complicated than Backbites realised. Greenpeace's temporary supremo in the territory, Anne Dingwall, is busy preparing the world-famous nuke-defying group's office in Sheung Wan for opening next month. So what are the hitches? 'Well, have you ever tried getting CFC-free air-conditioning?' she said. CFCs are those horrible chemicals that fly into the atmosphere and eat at the ozone layer, exposing us to skin cancer and other dread diseases. They've been banned for import since January. The alternative chemicals, it seems, aren't good enough as they still gobble ozone, albeit slower than CFCs. 'We had to find the Shanghai representative of the Italian company DeLonghi who have portable air-conditioners that run on Greenfreeze technology,' she said. Greenfreeze uses propane and butane gases to cool, apparently, and those gases don't do anything bad. Also, if they're portable machines, Greenpeace can save energy by cooling only the parts of the office they need to. Backbites wonders how long it will be before scientists decide there's something wrong with these systems too. Then Greenpeace will be hunting for ice - the wet kind, of course.