International scientific body
Appears in 5 stories · Last updated Nov 10, 2026
Defines the 46 AR6 regions used in the study
In northwestern North America, the past decade averaged about 3°C warmer than the late 1800s. A study published in Nature Climate Change finds that is roughly twice the global land average, which has already reached 1.9°C above preindustrial levels.
Updated Yesterday
As of September 2026: Its default accounting treats agricultural lime as a CO2 source; this study challenges that treatment
Farmers have spread limestone on acidic soil for a century, and climate accounting has treated the practice as a CO2 source. A new study in Nature argues that accounting is wrong: across the Mississippi River Basin, liming has been a net carbon sink since 1900.
Updated Sep 25
As of May 2026: Will use CMIP7 outputs for AR7, due 2028–2029
The scenario long used as climate change's 'business as usual' no longer counts. In April 2026, the team building the next generation of global climate models removed SSP5-8.5 (the high-emissions track behind most '4-5°C by 2100' headlines) from CMIP7, which will feed the IPCC's seventh assessment report.
Updated May 31
As of May 2026: Primary international authority on climate science
For decades, scientists assumed forests and soils absorbed roughly 30% of humanity's carbon dioxide emissions. A major reassessment published in Nature in January 2026 shows they've been overestimating: the natural land carbon sink is 20% smaller than previously calculated. That's 0.6 billion tonnes of carbon per year staying in the atmosphere instead of being absorbed.
Updated May 27
As of May 2026: Also included in Trump's withdrawal from 66 organizations
On January 7, 2026, Trump signed a memorandum directing US withdrawal from the UN Framework Convention on Climate Change—the 1992 treaty George H.W. Bush signed and the Senate unanimously ratified. The US is the first of 198 parties to exit. The UNFCCC underpins all international climate negotiations (unlike the Paris Agreement, which Trump also exited), and withdrawal takes effect one year from notification.
Updated May 19
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