CO2 Emissions
Global CO₂ emissions are projected to rise by 1.1% in 2025 compared to the previous year, according to an international research group at the University of Exeter in their Global Carbon Budget 2025 report. This could exhaust the CO₂ budget needed to meet the 1.5-degree target of the Paris Agreement before 2030. The researchers deem it no longer realistic to limit global warming to below 1.5 degrees Celsius.
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Global average CO2 concentrations jumped by a record 3.5 parts per million in 2024, reaching 423.9 ppm, according to the World Meteorological Organization. This marks the largest annual increase since measurements began in 1957. The surge is attributed to fossil fuel emissions, wildfires, and reduced carbon uptake by lands and oceans.