The United Nations reported a record-breaking increase in atmospheric carbon dioxide (CO2) in 2024, the largest one-year jump since records began in 1957, urging immediate action to curb emissions.

• CO2 concentrations reached 424 parts per million (ppm) in 2024, with a 3.5 ppm increase from 2023 to 2024.
• The World Meteorological Organization (WMO) expressed "significant concern" that oceans and land are becoming less capable of absorbing CO2.
• This increase defies commitments made under the 2015 Paris Agreement to limit global warming, with Deputy Secretary-General Ko Barrett stating, "Reducing emissions is therefore essential not just for our climate but also for our economic security and community well-being."