Offsetting unabated agricultural emissions with CO2 removal to achieve ambitious climate targets

22. Herrero M, Henderson B, Havlı´k P, Thornton PK, Conant RT, Smith P, et al. Greenhouse gas mitigation potentials in the livestock sector. Nat Clim Change. 2016; 6: 452–461. https://doi.org/10.1038/ nclimate2925 23. Frank S, Beach R, Havlı´k P, Valin H, Herrero M, Mosnier A, et al. Structural change as a key component for agricultural non-CO 2 mitigation efforts. Nat Commun. 2018; 9: 1–8. https://doi.org/10.1038/s41467- 017-02088-w PMID: 29317637 24. Pradhan P, Reusser DE, Kropp JP. Embodied Greenhouse Gas Emissions in Diets. PLOS ONE. 2013; 8: e62228. https://doi.org/10.1371/journal.pone.0062228 PMID: 23700408 25. Monteiro CA, Pfeiler TM, Patterson MD, Milburn MA. The Carnism Inventory: Measuring the ideology of eating animals. Appetite. 2017; 113: 51–62. https://doi.org/10.1016/j.appet.2017.02.011 PMID: 28189749 26. Hartmann C, Siegrist M. Our daily meat: Justification, moral evaluation and willingness to substitute. Food Qual Prefer. 2020; 80: 103799. https://doi.org/10.1016/j.foodqual.2019.103799 27. Hartmann C, Siegrist M. Consumer perception and behaviour regarding sustainable protein consump- tion: A systematic review. Trends Food Sci Technol. 2017; 61: 11–25. https://doi.org/10.1016/j.tifs. 2016.12.006 28. Wirsenius S, Hedenus F, Mohlin K. Greenhouse gas taxes on animal food products: rationale, tax scheme and climate mitigation effects. Clim Change. 2011; 108: 159–184. https://doi.org/10.1007/ s10584-010-9971-x 29. Fesenfeld LP, Wicki M, Sun Y, Bernauer T. Policy packaging can make food system transformation fea-

sible. Nat Food. 2020; 1: 173–182. https://doi.org/10.1038/s43016-020-0047-4 30. Frank S, Havlı´k P, Soussana J-F, Levesque A, Valin H, Wollenberg E, et al. Reducing greenhouse gas emissions in agriculture without compromising food security? Environ Res Lett. 2017; 12: 105004. https://doi.org/10.1088/1748-9326/aa8c83 31. Fujimori S, Hasegawa T, Rogelj J, Su X, Havlik P, Krey V, et al. Inclusive climate change mitigation and food security policy under 1.5\hspace0.167em˚C climate goal. Environ Res Lett. 2018; 13: 074033. https://doi.org/10.1088/1748-9326/aad0f7 32. Bertram C, Luderer G, Popp A, Minx JC, Lamb WF, Stevanović M, et al. Targeted policies can compen- sate most of the increased sustainability risks in 1.5˚C mitigation scenarios. Environ Res Lett. 2018; 13: 064038. https://doi.org/10.1088/1748-9326/aac3ec 33. Rogelj J, Shindell D, Jiang K, Fifita S, Forster P, Ginzburg V, et al. Mitigation Pathways Compatible with 1.5˚C in the Context of Sustainable Development. Geneva, Switzerland: Intergovernmental Panel for Climate Change; 2018 p. 82. 34. Rogelj J, Reisinger A, McCollum DL, Knutti R, Riahi K, Meinshausen M. Mitigation choices impact car- bon budget size compatible with low temperature goals. Environ Res Lett. 2015; 10: 075003. https://doi. org/10.1088/1748-9326/10/7/075003 35. Allen MR, Fuglestvedt JS, Shine KP, Reisinger A, Pierrehumbert RT, Forster PM. New use of global warming potentials to compare cumulative and short-lived climate pollutants. Nat Clim Change. 2016; 6: 773–776. https://doi.org/10.1038/nclimate2998

36. Fuss S, Lamb WF, Callaghan MW, Hilaire J, Creutzig F, Amann T, et al. Negative emissions—Part 2: Costs, potentials and side effects. Environ Res Lett. 2018; 13: 063002. https://doi.org/10.1088/1748- 9326/aabf9f 37. Parker A, Geden O. No fudging on geoengineering. Nat Geosci. 2016; 9: 859–860. https://doi.org/10. 1038/ngeo2851 38. Anderson K, Peters G. The trouble with negative emissions. Science. 2016; 354: 182–183. https://doi. org/10.1126/science.aah4567 PMID: 27738161 39. Nemet GF, Callaghan MW, Creutzig F, Fuss S, Hartmann J, Hilaire J, et al. Negative emissions—Part 3: Innovation and upscaling. Environ Res Lett. 2018; 13: 063003. https://doi.org/10.1088/1748-9326/ aabff4 40. Low S, Scha¨fer S. Is bio-energy carbon capture and storage (BECCS) feasible? The contested authority of integrated assessment modeling. Energy Res Soc Sci. 2020; 60: 101326. https://doi.org/10.1016/j. erss.2019.101326 41. Low S, Honegger M. A Precautionary Assessment of Systemic Projections and Promises From Sunlight Reflection and Carbon Removal Modeling. Risk Anal. 2020;n/a. https://doi.org/10.1111/risa.13565 PMID: 32722874 42. Reynolds JL. The politics and governance of negative emissions technologies. Glob Sustain. 2018; 1. https://doi.org/10.1017/sus.2018.13 PLOS ONE Offsetting future agricultural emissions with CO2 removal PLOS ONE | https://doi.org/10.1371/journal.pone.0247887 March 17, 2021 16 / 19