Greta gave us the words. Here are the numbers.

Cut11Percent is an annually updated set of figures that shows what is required to meet the objective of the Paris Agreement. It provides the required annual emissions reductions for the 1.5°C target and the 2°C target, for every nation in the world. This is what it all comes down to.

Everyone has the Right to Know these numbers.

We demand laws that respect science.

A systemic problem requires a systemic solution.


The science behind

the numbers

The foundation for all the numbers in Cut11Percent is the remaining global carbon budget for both 1.5°C and 2°C heating. It is the most fundamentally important budget for human civilization.

Basic justice tells us that this budget should be divided per capita.

It is also clear to common sense that:

– the emissions reductions should be based on consumption, not territorial emissions

– the calculations about what needs to be done should not include carbon capture technology that is not real.

– the reductions should happen from now. The young should not be further burdened by more ecological debt.


A collective effort to


Science and numbers alone are not enough. For change to take place we need a shift in our collective mindset. If we want to embed these numbers in our laws and democracy, we need to create global awareness and understanding of this vital data. Support #cut11percent. With your endorsement or action.


Prof. Kevin Anderson
Professor of Energy and Climate Change
& former Director of the Tyndall Centre for Climate Change Research


The science and the data

behind Cut11Percent 

The science and the data behind Cut11Percent come from OnlyOneEarth.science.

“OnlyOneEarth.science is an important contribution to the United Nations 75th Anniversary Initiative”

(Fabrizio Hochschild, the Secretary General’s Special Advisor on the preparations for the Commemoration of the United Nations’ 75th Anniversary). 

The scientists listed below are among other eminent scientists that have reviewed and support the public communication of the existential UN science presented by OnlyOneEarth.science.

Dr Jian Liu (Chief Scientist UNEP), 

Dr Pavel Kabat (Chief Scientist WMO), 

Dr Soumya Swaminathan (Chief Scientist WHO), 

Dr Youba Sokona (Vice Chair IPCC), 

Dr Janez Potocnik (Co Chair IRP), 

Dr Shamila Nair-Bedouelle (Director General Science UNESCO), 

Dr Guido Schmidt-Traub (Executive Director UNSDSN), 

Dr Elizabeth Mrema (Executive Secretary CBD), 

Dr Stefan Swartling Peterson (Director Health UNICEF) 


Stay up to date on the

latest climate science!

Both the numbers and the human response to the crisis are always on the move. Subscribe to our newsletter to receive regular scientific and philosophical input on the state we are in.

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This platform provides climate leaders and students with the vital statistics behind climate change.

It enables everyone to take action and demand laws that are informed by reality.

Cut11Percent is grounded on the authoritative research of OnlyOneEarth.science.

These crucial numbers are carried into the public space by students through demonstrations, media, journalism and events.

The core group of students advocating for the Right to Know this reality are members of the Climate Academy, founded by Philosophy teacher and author, Matthew Pye.

We strongly believe that citizens need to demand systemic change, not simply engage in individual actions.

We have laws to protect us from all kinds of dangers, from theft and violence, from toxic gas leaks and to toxic pizzas… why do we not have a law to protect us from the collapse of the ecosystems that all our lives are rooted in?  

We invite people to join in our call for a focused, holistic response to the crisis.

The Numbers

Discover your nation’s carbon emissions percentage needed to globally stay below a 1.5°C and 2°C temperature rise target.

The Science

How does Cut11Percent work? Check out the science behind the Cut11Percent numbers. Courtesy of Homo Sapiens Foundation.

The Academy

To share our science and knowledge in a systemic and sustainable way, our numbers are taught at the Climate Academy.

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