Otago Daily Times: Almost half of New Zealanders are not convinced global warming is real, a survey suggests. A survey by The New Zealand Herald has found that although United Nations experts have grown steadily more certain about climate change, the public is not so sure. Almost one in five of 2296 respondents said the concept was a giant con, and a further 28% said global warming had not been conclusively proved. Prime Minister John Key’s science adviser, Sir Peter Gluckman, said the 28% …