New York Times: On the windswept streets of Newcastle, the world’s largest coal port and a hub of Australian heavy industry, people get nervous when asked to give their opinions on climate change. Australia is the world’s largest exporter of coal, which pumps billions of dollars into the economy, supplies more than 80 percent of the country’s electricity and keeps tens of thousands of people in their jobs – particularly in and around Newcastle. But the carbon dioxide produced from burning coal is …