Globe and Mail: Greenhouse-gas emissions in Canada declined for a second year in a row during 2006, falling to 721 million tonnes, or by 1.9 per cent from a year earlier, according to figures released yesterday by Environment Canada. The back-to-back reduction was attributed to a drop in the amount of coal used to produce electricity, warmer winters leading to reduced fuel consumption for space heating, and less fossil fuel use in the oil refining industry. Emissions haven’t fallen for two …