Global greenhouse gas levels reached unprecedented highs in 2024, according to the United Nations’ World Meteorological Organization (WMO). Carbon dioxide (CO₂), methane, and nitrous oxide all hit record concentrations, with CO₂ levels climbing to 424 parts per million — the largest annual increase since records began in 1957. The surge has intensified concerns about the world’s ability to meet Paris Agreement goals and limit global warming.
WMO attributed the rise to fossil fuel use, wildfires, and a decline in natural carbon absorption by forests and oceans. Scientists warn that such increases could trigger climate feedback loops, where warming leads to further emissions from sources like melting permafrost and forest fires, pushing the planet closer to irreversible tipping points.
Methane and nitrous oxide — largely from agriculture and waste — also rose sharply, despite their shorter lifespans. These gases trap far more heat per molecule than CO₂, amplifying the greenhouse effect.
Experts stress that urgent, coordinated action is essential to reduce global emissions and prevent further temperature rise. The issue will be central at the upcoming COP30 summit in Brazil, where nations are expected to strengthen their climate commitments.
