ENVIRONMENT INTEL Arctic Permafrost Thaw Accelerating Methane Release Cycle Arctic permafrost contains approximately 1,700 gigatons of organic carbon—roughly twice the amount currently in Earth's atmosphere. Since 1980, permafrost temperatures have risen 0.7°C per decade in some regions, unlocking methane that was sequestered for millennia. This creates a feedback loop: thawing releases methane, methane traps heat, heat accelerates thaw. Current projections suggest 15-30% of permafrost could degrade by 2100, releasing 160+ gigatons of CO2 equivalent. Why This Matters: Unlike emissions we can regulate or reduce, permafrost thaw represents a climate tipping point beyond direct human control—once triggered, it self-perpetuates regardless of future carbon policies, fundamentally altering the calculus of climate mitigation timelines.