23 diciembre 2014
The distinctive “fecal prints” of microbes potentially provide a record of how Earth and life have co-evolved over the past 3.5 billion years as the planet’s temperature, oxygen levels, and greenhouse gases have changed. But, despite more than 60 years of study, it has proved difficult, until now, to “read” much of the information contained in this record.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/6fGg46cdjXg/141223132817.htm
