Science Policy Brief

This science-policy brief presents the current key findings of NEGEM, iIt provides science-based facts to help answer questions such as:

  • To what extent is Carbon Dioxide Removal (CDR) required to achieve climate neutrality?
  • At what scale is it feasible to implement CDR methods, given their technical, environmental, economic and socio-political aspects?
  • How to formulate policies and governance structures to optimize the deployment of CDR within the overall climate architecture?

It also provides key messages on the role of CDR for EU’s 2040 climate policy.

In June 2023 it was submitted to the European Commission, in response to the public consultation launched to start the process to establish a 2040 climate target for the EU, towards climate neutrality by 2050.


D8.1 Stocktaking of scenarios
with negative emission
technologies and practices

Documentation of the vision making process and initial NEGEM vision


The meaning of net zero and how to get it right

Sam Fankhauser, Stephen M. Smith, Myles Allen, et al.

A review of commercialisation mechanisms for carbon dioxide removal

Conor Hickey, Sam Fankhauser, Stephen M. Smith, Myles Allen

Net Zero:
Science, Origins, and Implications

Myles R. Allen,Pierre Friedlingstein et al.
Annual Review of Environment and Resources, 2022

CO2 removal and 1.5 °C: what, when, where, and how?

Solene Chiquier, Mathilde Fajardy, Niall Mac Dowell Energy Advances

A comparative analysis of the efficiency, timing, and permanence of CO2 removal pathways

Solene Chiquier, Piera Patrizio, Mai Bui, Nixon Sunnyab, Niall Mac Dowell Energy & Environmental Science

Comparing approaches for carbon dioxide removal

Niall Mac Dowell, David M.Reiner, R. Stuart Haszeldine

Potential of Land-Neutral Negative Emissions Through Biochar Sequestration

C. Werner, W. Lucht, D. Gerten and C. Kammann
Earth's Future 2022 Vol. 10

Human and planetary health implications of negative emissions technologies

Selene Cobo, Ángel Galán-Martín, Victor Tulus, Mark A. J. Huijbregts & Gonzalo Guillén-Gosálbez

Europe’s ‘green deal’ and carbon dioxide removal

Reiner, David M.; Hannula, Ilkka et al. - opinion article published in Nature in January 2021 on behalf of NEGEM Consortium

Upstream decarbonization through a carbon takeback obligation: An affordable backstop climate policy

Jenkins, Stuart; Mitchell-Larson, Eli; Haszeldine, Stuart; Allen, Myles

Sustainable financing of permanent CO2 disposal through a Carbon Takeback Obligation

Stuart Jenkins, Eli Mitchell-Larson, Stuart Haszeldine, Myles Allen, was published in pre-print in Arxiv in July 2020