How bacteria and archaea influence one of Earth’s largest carbon stores as it begins to thaw
Monique Brouillette writes: For most of human history, permafrost has been Earth’s largest terrestrial carbon sink, trapping plant and animal material in its frozen layers for centuries. It currently stores about 1,600 billion tonnes of carbon — more than twice the amount in the atmosphere today. But thanks to rising temperatures, permafrost is fracturing and disappearing, leaving behind dramatic changes in the landscape. Scientists are becoming increasingly worried that the thaw will lead to an epic feast for bacteria and…