News.com.au: THE amount of carbon dioxide being released into the atmosphere in the US has fallen to its lowest level in 20 years as power plant operators switch from coal to natural gas. Michael Mann, director of the Earth System Science Center at Penn State University, said on Thursday the shift away from coal was reason for "cautious optimism" about potential ways to deal with climate change. "There's a very clear lesson here. What it shows is that if you make a cleaner energy source cheaper, you will...
URL: http://www.news.com.au/breaking-news/world/us-carbon-emissions-drop-to-20-year-low/story-e6frfkui-1226452797057?from=public_rss
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