Archive · 25 Sep 2026
Study Finds Past Polluter Emissions Will Shape Climate for Centuries
Scientists studied pollution from major oil, gas, coal and cement producers.
They found that carbon dioxide released in the past can keep warming the planet for hundreds of years.
This is because much of the gas stays in the air and traps heat.
Stopping emissions tomorrow would not make the climate return to its old state immediately.
The study says past pollution could contribute to more climate disasters in the coming decades.
Dargan Frierson of the University of Washington said the amount of future warming can be estimated.
He also said responsibility for the effects could continue far into the future.
The findings may influence decisions about fossil fuels and legal claims against polluters.
Researchers at the University of Washington studied emissions from the top 178 oil, gas, coal and cement producers.
They found past emissions could affect the climate for hundreds of years, longer than earlier predictions suggested.
The producers have emitted more than one trillion tons of carbon dioxide since the industrial revolution began.
Even a sharp reduction or complete halt in greenhouse-gas emissions would not quickly restore preindustrial conditions.
Researchers said continued fossil-fuel production could worsen climate disasters and lead to future accountability disputes.
- Who
- Researchers at the University of Washington, including associate professor Dargan Frierson, and the top 178 oil, gas, coal and cement producers.
- What
- A study found that past emissions from major polluters will continue affecting the climate for decades to hundreds of years.
- When
- The study was published on 23 September; its projected effects extend into the coming decades and beyond.
- Where
- The research was conducted by the University of Washington and published in PLOS Climate.
- Why
- Carbon dioxide from past fossil-fuel production remains in the atmosphere and traps heat, prolonging climate impacts.
Long-Term Accountability
Emitter Defense
Responsibility for future impacts
Long-Term Accountability
The study and Dargan Frierson indicate that major emitters may remain responsible for climate effects from their past emissions for many years.
Emitter Defense
Several companies deny knowing how dangerous their emissions could be, allowing them to avoid taking responsibility, according to the article.
Future fossil-fuel production
Long-Term Accountability
Researchers warn that continued production could worsen climate disasters for many decades and support new legal battles over accountability.
Emitter Defense
The article does not provide a detailed response from fossil-fuel producers about future production or the study's findings.
- Study journal
- PLOS Climate
- Publication date
- 23 September
- Researchers
- University of Washington researchers
- Polluters studied
- The top 178 oil, gas, coal and cement producers
- Historical emissions
- More than one trillion tons of carbon dioxide
- Projected duration
- Climate impacts could continue for decades to hundreds of years
- Study implication
- Future fossil-fuel production could exacerbate climate disasters and accountability disputes