Articles | Volume 8, issue 3
https://doi.org/10.5194/esd-8-577-2017
https://doi.org/10.5194/esd-8-577-2017
Research article
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18 Jul 2017
Research article | Highlight paper |  | 18 Jul 2017

Young people's burden: requirement of negative CO2 emissions

James Hansen, Makiko Sato, Pushker Kharecha, Karina von Schuckmann, David J. Beerling, Junji Cao, Shaun Marcott, Valerie Masson-Delmotte, Michael J. Prather, Eelco J. Rohling, Jeremy Shakun, Pete Smith, Andrew Lacis, Gary Russell, and Reto Ruedy

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (06 Jan 2017) by James Dyke
AR by James Hansen on behalf of the Authors (06 Jan 2017)  Author's response 
ED: Referee Nomination & Report Request started (10 Jan 2017) by James Dyke
RR by Anonymous Referee #1 (18 Jan 2017)
RR by Anonymous Referee #2 (05 Feb 2017)
RR by Anonymous Referee #3 (01 Mar 2017)
ED: Reconsider after major revisions (16 Mar 2017) by James Dyke
AR by James Hansen on behalf of the Authors (27 Apr 2017)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (09 May 2017) by James Dyke
RR by Anonymous Referee #2 (15 May 2017)
RR by Anonymous Referee #3 (17 May 2017)
ED: Publish subject to minor revisions (review by Editor) (18 May 2017) by James Dyke
AR by James Hansen on behalf of the Authors (29 May 2017)  Author's response   Manuscript 
ED: Publish subject to technical corrections (08 Jun 2017) by James Dyke
AR by James Hansen on behalf of the Authors (08 Jun 2017)  Manuscript 
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Short summary
Global temperature now exceeds +1.25 °C relative to 1880–1920, similar to warmth of the Eemian period. Keeping warming less than 1.5 °C or CO2 below 350 ppm now requires extraction of CO2 from the air. If rapid phaseout of fossil fuel emissions begins soon, most extraction can be via improved agricultural and forestry practices. In contrast, continued high emissions places a burden on young people of massive technological CO2 extraction with large risks, high costs and uncertain feasibility.
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