The U.N. warns the world is close to crossing a dangerous climate change threshold

Live updates

1. 7d ago

   UN Warns of 1.5C Limit Breach as Global Food Supplies Strain

   The United Nations warns that global heating will reach at least 1.8C, exceeding the 1.5 Celsius limit within a few years. Officials report no good outcomes regarding this climate overshoot, even as new reports map paths to return temperatures below the danger zone. This environmental pressure coincides with a UN food price index hitting a four-year high. Global agriculture faces severe strain from the combined impacts of weather, attacks on Black Sea grain infrastructure, and a fertilizer shock from the Iran war.

   Why it matters

   Surpassing the 1.5C climate threshold acts as a major warning flag to redouble efforts against global heating. Simultaneously, shocks to the agricultural production cycle threaten food supplies significantly for the 2027 and 2028 growing seasons. These overlapping crises unfold as the U.N. General Assembly opens its 81st ordinary session under the theme Restoring Trust, Managing Transformation.

   What is confirmed

   • The United Nations warns that global heating will reach at least 1.8C.
   • The UN Environment Programme expects temperatures to exceed the 1.5 Celsius limit within a few years.
   • The 81st ordinary session of the UN General Assembly opens on 8 September 2026 and closes on 7 September 2027.
   • His Excellency Khalilur Rahman of the People’s Republic of Bangladesh serves as President of the General Assembly at the 81st session.

   Still unconfirmed

   • Michael Werz notes that agricultural pain from Black Sea grain infrastructure attacks and the Iran war fertilizer shock will be felt in the 2027 and 2028 growing seasons.

   What to watch next

   • Implementation of the new report's path to return temperatures below the danger zone
   • Developments in the 2027 and 2028 growing seasons regarding agricultural strains
   • Proceedings of the 81st session of the UN General Assembly
   Sources used for this update (4)

   1. theconversation.com — Yes, passing 1.5 C of global warming is cause for alarm, but not despair
   2. www.un.org — 81st session
   3. www.cfr.org — Hunger Warfare and a Fertilizer Crisis Are Straining Global Food Supplies
   4. jen.jiji.com — Kazakhstan records long-term gains in science as math scores fall in PISA 2025
   confidence 100%
2. 11d ago

   UN Warns Global Warming Will Exceed 1.5 Celsius Threshold

   The United Nations warns that global heating will reach at least 1.8C, missing established climate targets. The UN Environment Programme (UNEP) expects temperatures to exceed the 1.5 Celsius limit within a few years. Officials state there are "no good outcomes" regarding this overshoot, though a new report maps a potential path to return temperatures below the danger zone. This warming trend coincides with a UN food price index reaching a four-year high due to the combined impact of weather and war.

   Why it matters

   The 1.5C limit is a critical threshold intended to prevent the most severe impacts of climate change. Crossing this limit leads to increased flooding and extreme weather. Returning to safer levels requires reversing warming after the overshoot occurs.

   What is confirmed

   • Global heating is projected to hit at least 1.8C.
   • Global temperatures are expected to exceed 1.5 Celsius within a few years.
   • The UN has produced a report mapping a path to return temperatures below the danger zone.
   • The UN food price index has risen to a four-year high.

   Still unconfirmed

   • Exceeding the climate limit will lead to an increase in ticks for Long Island.

   What to watch next

   • Evidence of global temperature reversal efforts
   • Updates to the UN food price index
   • Specific timelines for the 1.5C exceedance
   Sources used for this update (12)

   1. The New York Times — U.N. Says World Will Miss Its Climate Target, Warming Must Be Reversed
   2. The Guardian — Global heating will hit at least 1.8C, UN warns, and there are ‘no good outcomes’
   3. Reuters — Global temperature rises to exceed 1.5 Celsius 'within a few years', UNEP says
   4. UNEP - UN Environment Programme — Limiting Overshoot - Navigating exceedance of 1.5°C and pathways towards return
   5. unep.org — Overshoot explained: 5 things to understand about a world beyond 1.5°C
   6. ABC News - Breaking News, Latest News and Videos — Global warming will exceed limit, UN says in a report that maps path to get back below danger zone
   7. Inside Climate News — Climate ‘Overshoot’ Is Coming—Are We Ready?
   8. Newsday — Temperatures exceeding limit means extreme weather, flooding, more ticks for Long Island, scientists warn
   9. npr.org — The U.N. warns the world is close to crossing a dangerous climate change threshold
   10. Mother Jones — Global Heating Will Hit at Least 1.8 C, UN Warns, With “No Good Outcomes”
   11. pbs.org — Global warming will exceed 1.5-degree limit, UN says in report that maps path back below danger zone
   12. www.aljazeera.com — Conflicts and extreme weather pushing global food prices higher, warns UN
   confidence 95%