Business Times: The warming from carbon dioxide released by burning a lump of coal exceeds the heat generated by the combustion in just 34 days. It takes 45 days for oil combustion and 59 days for natural gas to achieve comparable warming to that generated by burning the respective fuel. This shows that global warming does not take years and decades for its effects to be felt, shows a study by climate scientists at the Carnegie Institution for Science. "Ultimately, the warming induced by carbon dioxide over the...