Cited by 6,085Agriculture Sustainability and Environmental ImpactSustainable Agricultural Systems AnalysisEnvironmental Impact and Sustainability

Reducing food's environmental impacts through producers and consumers

Poore, J., Nemecek, T.·2018·Science

Abstract

Food's environmental impacts are created by millions of diverse producers. To identify solutions that are effective under this heterogeneity, we consolidated data covering five environmental indicators; 38,700 farms; and 1600 processors, packaging types, and retailers. Impact can vary 50-fold among producers of the same product, creating substantial mitigation opportunities. However, mitigation is complicated by trade-offs, multiple ways for producers to achieve low impacts, and interactions throughout the supply chain. Producers have limits on how far they can reduce impacts. Most strikingly, impacts of the lowest-impact animal products typically exceed those of vegetable substitutes, providing new evidence for the importance of dietary change. Cumulatively, our findings support an approach where producers monitor their own impacts, flexibly meet environmental targets by choosing from multiple practices, and communicate their impacts to consumers.

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Crossref · 10.1126/science.aaq0216

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103 of 103 references verified0 citation errors · 0 not checkable

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  • Most previous studies on sustainable meat have examined a limited range of aspects.

    “Most previous studies on sustainable meat have examined a limited range of aspects (e.g., Clark and Tilman 2017; Poore and Nemecek 2018)”
  • The agricultural production-consumption cycle, including agricultural and food waste generation, contributes about one-third of global greenhouse gas emissions annually.

    “agricultural production-consumption cycle (including agricultural and food waste generation) contribute significant to global greenhouse gas (GHG) emissions of about one-third annually which is a significant contribution for a single sector (3).”
  • Algae demonstrate superior land efficiency over several plant-based sources, with nuts requiring 7.9 m2, pulses 7.3 m2, grains 4.6 m2, and peas 3.4 m2 of land per kg of protein.

    “Algae also demonstrate superior land efficiency over several plant-based sources, with nuts requiring 7.9 m2, pulses 7.3 m2, grains 4.6 m2, and peas 3.4 m2 of land per kg of protein [10].”
  • Algal proteins require substantially less land than both animal- and plant-derived protein sources.

    “In terms of land-use efficiency, algal proteins require substantially less land than both animal- and plant-derived protein sources.”
  • Existing global comparisons of pasture-finished and grain-finished systems do not account for both carbon opportunity cost and soil carbon sequestration.

    “Existing global comparisons of pasture-finished and grain-finished systems are incomplete as they do not account for both carbon opportunity cost and soil carbon sequestration.”

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Authors
Poore, J., & Nemecek, T.
Affiliations
  • University of Oxford (GB)
  • Agroscope (CH)
Corresponding author
Poore, J.
Venue
Science
Published
2018-06
Volume
360
Issue
6392
Pages
987-992
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2806569362
Cited by
6,085
References
102
Citations by year
2026: 1005 · 2025: 1069 · 2024: 960 · 2023: 896 · 2022: 808 · 2021: 694 · 2020: 401 · 2019: 204 · 2018: 41 · 2017: 1 · 2013: 3
FWCI
253.23
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Ecology › Agriculture Sustainability and Environmental Impact
  • Physical Sciences › Environmental Science › Environmental Chemistry › Sustainable Agricultural Systems Analysis
  • Physical Sciences › Environmental Science › Environmental Engineering › Environmental Impact and Sustainability
Keywords
food supply chain, producer heterogeneity, animal products, plant-based diet, dietary change, food packaging, food processors, retail companies, customer communication, environmental objectives
MeSH terms
Crop Production, Animals, Animal Feed, Environment, Feeding Behavior, Food, Food Supply, Humans, Aquaculture, Food Packaging, Livestock

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