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Food security under climate change

Using food prices to assess climate change impacts on food security is misleading. Differential impacts on income require a broader measure of household well-being, such as changes in absolute poverty.

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Figure 1: Distribution of absolute poverty, by earnings stratum ($1 per day for surveys predating 2000, and $1.25 per day thereafter).

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Acknowledgements

The author acknowledges research assistance from German A. Marquez Alcala, and comments on an earlier draft by Noah Diffenbaugh, Wally Falcon, Derek Headey, Kayenat Kabir, David Lobell, Will Martin, Michael Mastrandrea and Alexander Popp. Funding for climate impacts work was received under DOE Grant No. DE-SC005171.

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Correspondence to Thomas W. Hertel.

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Hertel, T. Food security under climate change. Nature Clim Change 6, 10–13 (2016). https://doi.org/10.1038/nclimate2834

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