If humanity wishes to preserve a planet similar to that on…
![“If humanity wishes to preserve a planet similar to that on which civilisation developed and to which life on Earth is adapted, paleoclimate evidence and ongoing climate change suggest that CO₂ will need to be reduced from its current 385 ppm [parts per million] to at most 350 ppm... If the present…” quote by James Hansen](https://sms4smile.com/q/i/4b3/james-hansen-7143_adapted_if-humanity-wishes-to-preserve-a-planet_1183760.jpg)
“If humanity wishes to preserve a planet similar to that on which civilisation developed and to which life on Earth is adapted, paleoclimate evidence and ongoing climate change suggest that CO₂ will need to be reduced from its current 385 ppm [parts per million] to at most 350 ppm... If the present overshoot of this target CO₂ is not brief, there is a possibility of seeding irreversible catastrophic effects.”
About This Quote
This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.
Humanity must lower CO₂ to ~350 ppm to avoid irreversible climate damage; current levels are too high and must be reduced quickly.
In simple terms: Reduce CO₂ to 350 ppm to prevent catastrophic climate change.
Key Takeaway
Act now to cut emissions.
Themes
environment
climate
policy
risk
science
Mood
urgent
concerned
Type
policy
scientific
When to use this quote
- government policy
- energy planning
- public advocacy
- industrial regulation
Key Concepts
carbon cycle
feedback loops
anthropogenic warming
Questions to Reflect On
- What policies can most effectively lower atmospheric CO₂?
- How can societies balance development with climate limits?
A Different Perspective
Reducing CO₂ is politically and economically challenging.