b'FLUXES The European Greenhouse Gas BulletinMonitoring, Reporting and Verification (MRV) systemsA critical tool for tracking climate action progressThe world needs to drastically reduce its greenhouse gas emissions to avoid the worst impacts of climate change. But how can we confidently measure the effectiveness of our efforts? Monitoring, Reporting and Verification (MRV) systems could provide the answer.By Peter Taggart2Support policymaking for3 Track progress on mitigating climate change climate action goals'