UN Says Greenhouse Gas Levels Hit Record Highs in 2025
The UN reports that carbon dioxide, methane and nitrous oxide concentrations reached unprecedented levels last year.
Headline and summary written by an AI model from the linked articles; not reviewed by a person. How this was made
First reported by New Scientist, 1h 08m ahead of the next publisher · who breaks stories first
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The odds
Each tick is a source publishing on this story
Price data
| Time | Chance of yes |
|---|---|
| now | 70% |
| 29 Oct, 06:04 UTC | 70% |
| 27 Oct, 15:05 UTC | 65% |
| 21 Oct, 06:44 UTC | 66% |
| 20 Oct, 05:48 UTC | 69% |
Replay the odds, article by article
Step through each article in the order it published and watch Before 2050 respond.
The story so far
4 publishers have covered this in 5 articles since 27 Oct 2026. New Scientist published first, on 27 October at 09:00 UTC; South China Morning Post followed 1h 09m later. The most recent article, from Phys.org - latest science and technology news stories, appeared on 27 October at 16:40 UTC.
Outlets reporting it: CBS News (major outlet), New Scientist, South China Morning Post, Phys.org - latest science and technology news stories.
One prediction market prices this story:
- Before 2050 — the market puts it at 70%, with $16 traded in the last 24 hours, closing 1 Jan 2050. The outcome is Yes if global temperatures hit or pass 2.0°C above pre-industrial levels in any single year before January 1, 2050. The outcome is No if that threshold remains unbreached by the deadline. Readers often mistake this for a long-term average rather than a specific annual peak.
Odds are the market's probability that the outcome happens, updated every few minutes. They are information about what traders expect, not a forecast we make and not investment advice.
How it unfolded
Every source in the order it published, with the odds on Before 2050 at that moment. A dash means the source published before we started tracking prices.
- New ScientistMajor greenhouse gases rise again to record levels66%
- South China Morning PostGreenhouse gas levels hit record highs, climate impact will last centuries: UN66%
- CBS NewsGreenhouse gas levels set records again in 2025, U.N. says66%
- Phys.org - latest science and technology news storiesGreenhouse gas levels hit new record highs in 2025: UN66%
- Phys.org - latest science and technology news storiesGreenhouse gases hit record highs, yet again65%▼1 points since the previous source
- Current odds70%
Sources
Every article we clustered into this story. Headlines link to the publisher.
- Greenhouse gas levels set records again in 2025, U.N. says CBS News ·
- Greenhouse gases hit record highs, yet again Phys.org - latest science and technology news stories
- Greenhouse gas levels hit new record highs in 2025: UN Phys.org - latest science and technology news stories
- Greenhouse gas levels hit record highs, climate impact will last centuries: UN South China Morning Post
- Major greenhouse gases rise again to record levels New Scientist
Related prediction markets
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- Kalshi Before 2050 70% +5
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In this story
- United Nations
- World Meteorological Organization