The WMO Greenhouse Gas Bulletin reported that the globally averaged surface concentration of CO2 in 2025 was 426.8 parts per million, or 153% of the 1750 pre-industrial baseline. Concentrations of methane and nitrous oxide - the second and third most important long-lived greenhouse gases related to human activities - also rose to a new record https://public.wmo.int/news/media-centre/greenhouse-gas-levels-once-again-reach-record-high #ClimateChange #UpheavalClimate #ClimateInstability #ClimateReversal #MassAtrocity #pollution #ecology #environment #climate