The risk of a hothouse Earth trajectory
cell.com
February 11, 2026
13 min read
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63/100
Summary
A hothouse Earth trajectory poses significant risks to global ecosystems and human societies. Research emphasizes the urgency of mitigating climate change to prevent irreversible damage to the planet's climate system.
Key Takeaways
- Global temperatures are currently as warm as or warmer than any period in the last 125,000 years, with carbon dioxide levels likely the highest in at least two million years.
- The recent breach of the Paris Agreement's 1.5°C limit for 12 consecutive months coincides with record-breaking heat and extreme weather events.
- Climate tipping points and feedback mechanisms indicate that several Earth system components may be closer to destabilization than previously believed.
- A "hothouse trajectory" could lead to irreversible climate changes, making it crucial to prevent this scenario before it occurs.