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Science Earth's biggest murder mystery: Methane-spewing microbe named prime suspect

An increase in the concentration of nickel near the end of the Permian period enabled microorganisms to increase methane production, causing an extinction event known as the Great Dying, say scientists.

By Staff writer / April 1, 2014

Suzhong Shen

Scientists might have just solved one of the world's oldest murder mysteries, an "ancient whodunit" perpetrated some 250 million years ago.