1 of 1
Story summary
- 2025 ranks among the three hottest years on record as global fossil fuel carbon dioxide emissions reach 38.1 billion tonnes.
- The World Meteorological Organization reports greenhouse gas concentrations at record highs, driving the temperature spike.
- The Arctic warms more than twice the global average, with March 2025 showing the lowest sea-ice extent on record.
- Oceans absorb unprecedented heat, contributing to sea-level rise projected at 0.20–0.29 meters by 2050.
