Reuters: The global economic downturn will help reduce Japan’s greenhouse gas emissions by some 50 million tons of CO2 equivalent in the current fiscal year, Kyodo news agency reported on Tuesday. Citing a preliminary analysis by the environment ministry, Kyodo said this new estimate could affect Tokyo’s discussions on crafting steps to tackle global warming and also how much Japan would cut greenhouse gas emissions by 2020. Emissions rose to 1.371 billion tons of CO2 equivalent in the …