Ancient whodunit may be solved: Methane-producing microbes did it! -- ScienceDaily

http://www.sciencedaily.com/releases/2014/03/140331153608.htm?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+sciencedaily%2Ftop_news%2Ftop_science+%28ScienceDaily%3A+Top+Science+News%29&utm_content=FaceBook

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