Behind the Iron Curtain: How Methane-Making Microbes Kept the Early Earth Warm

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Tiny incubators were used to simulate early Earth conditions, tracking microbial diversity and methane emissions over a period of 500 days. (Credit: Rob Felt, Georgia Tech)

Marcus Bray (left), a biology Ph.D. candidate and Jennifer Glass, assistant professor in the Georgia Institute of Technology’s School of Earth and Atmospheric Sciences, are shown in the laboratory where tiny incubators simulated early Earth conditions. (Credit: Rob Felt, Georgia Tech)