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Story summary
- UNEP says the United Nations report projects 2.6°C warming by 2100.
- UN chief Antonio Guterres warned the world can no longer avoid overshooting the 1.5°C limit.
- Global greenhouse-gas emissions in 2025 matched 2024 levels, with coal, oil and gas emissions slightly higher.
- U.S. emissions rose 133 megaton CO2-equivalent in 2025, the G20’s largest increase, due to electricity demand and coal rebound.
