{
  "schema_version": "1.0.0",
  "id": "higher-lower-food-v1",
  "version": "1.0.0",
  "title": "Higher or Lower: Food CO2 Edition",
  "description": "Ten comparisons of global mean greenhouse gas emissions per kilogram of food product, using Poore and Nemecek (2018) data processed by Our World in Data.",
  "locale": "en-GB",
  "public_url": "https://inzonex.co.uk/carbon/quiz/higher-or-lower-food/",
  "privacy": {
    "stores_answers": false,
    "result_url_fields": [
      "pack",
      "version",
      "result",
      "score",
      "max",
      "seed"
    ]
  },
  "randomization": {
    "question_order": "seeded",
    "option_order": "seeded"
  },
  "scoring": {
    "mode": "correct_count",
    "points_per_correct": 1
  },
  "results": [
    {
      "id": "carbon-rookie",
      "min_score": 0,
      "max_score": 3,
      "title": "0-3 correct",
      "summary": "You answered up to three of these ten food comparisons correctly. Explore the answers and try again."
    },
    {
      "id": "carbon-curious",
      "min_score": 4,
      "max_score": 6,
      "title": "4-6 correct",
      "summary": "You answered four to six of these ten food comparisons correctly. Review the close comparisons."
    },
    {
      "id": "carbon-fluent",
      "min_score": 7,
      "max_score": 8,
      "title": "7-8 correct",
      "summary": "You answered seven or eight of these ten food comparisons correctly."
    },
    {
      "id": "carbon-data-nerd",
      "min_score": 9,
      "max_score": 10,
      "title": "9-10 correct",
      "summary": "You answered nine or ten of these ten food comparisons correctly."
    }
  ],
  "sources": [
    {
      "id": "owid-poore-nemecek-food-ghg-2018",
      "title": "Greenhouse gas emissions per kilogram of food product",
      "authors": "Poore and Nemecek (2018), processed by Our World in Data",
      "source_page": "https://ourworldindata.org/grapher/ghg-per-kg-poore",
      "data_url": "https://api.ourworldindata.org/v1/indicators/1206176.data.json",
      "metadata_url": "https://api.ourworldindata.org/v1/indicators/1206176.metadata.json",
      "archive_url": "https://archive.ourworldindata.org/20260727-131016/grapher/ghg-per-kg-poore.html",
      "original_doi": "https://doi.org/10.1126/science.aaq0216",
      "dataset_version": "2019-10-08",
      "api_metadata_updated_at": "2026-05-18T08:53:39.000Z",
      "checked_date": "2026-08-29",
      "license_note": "OWID processing is CC BY; original third-party data remains attributed to Poore and Nemecek.",
      "raw_data_sha256": "0227cb296cf68e9e8dddb6cc037b51d42bfbf82b2b2b0f2fd05215b5304933f1",
      "raw_metadata_sha256": "80e9a720df71da5826bc0279293df2717e475ac7928ea1bea966c66e0f9a7dbe"
    }
  ],
  "questions": [
    {
      "id": "food-01",
      "type": "higher-lower",
      "prompt": "Which has the higher global-average greenhouse gas footprint per kilogram?",
      "functional_unit": "1 kilogram of product",
      "options": [
        {
          "id": "35959",
          "label": "Coffee",
          "value": 28.53
        },
        {
          "id": "36002",
          "label": "Cheese",
          "value": 23.88
        }
      ],
      "correct_option_id": "35959",
      "explanation": "Coffee is 28.53 kgCO2e/kg versus 23.88 kgCO2e/kg for Cheese in the same global-mean dataset.",
      "source_ids": [
        "owid-poore-nemecek-food-ghg-2018"
      ]
    },
    {
      "id": "food-02",
      "type": "higher-lower",
      "prompt": "Which has the higher global-average greenhouse gas footprint per kilogram?",
      "functional_unit": "1 kilogram of product",
      "options": [
        {
          "id": "91264",
          "label": "Dark Chocolate",
          "value": 46.65
        },
        {
          "id": "91266",
          "label": "Beef (dairy herd)",
          "value": 33.3
        }
      ],
      "correct_option_id": "91264",
      "explanation": "Dark Chocolate is 46.65 kgCO2e/kg versus 33.30 kgCO2e/kg for Beef (dairy herd) in the same global-mean dataset.",
      "source_ids": [
        "owid-poore-nemecek-food-ghg-2018"
      ]
    },
    {
      "id": "food-03",
      "type": "higher-lower",
      "prompt": "Which has the higher global-average greenhouse gas footprint per kilogram?",
      "functional_unit": "1 kilogram of product",
      "options": [
        {
          "id": "91268",
          "label": "Poultry Meat",
          "value": 9.87
        },
        {
          "id": "91269",
          "label": "Fish (farmed)",
          "value": 13.63
        }
      ],
      "correct_option_id": "91269",
      "explanation": "Fish (farmed) is 13.63 kgCO2e/kg versus 9.87 kgCO2e/kg for Poultry Meat in the same global-mean dataset.",
      "source_ids": [
        "owid-poore-nemecek-food-ghg-2018"
      ]
    },
    {
      "id": "food-04",
      "type": "higher-lower",
      "prompt": "Which has the higher global-average greenhouse gas footprint per kilogram?",
      "functional_unit": "1 kilogram of product",
      "options": [
        {
          "id": "34809",
          "label": "Rice",
          "value": 4.45
        },
        {
          "id": "34801",
          "label": "Eggs",
          "value": 4.67
        }
      ],
      "correct_option_id": "34801",
      "explanation": "Eggs is 4.67 kgCO2e/kg versus 4.45 kgCO2e/kg for Rice in the same global-mean dataset.",
      "source_ids": [
        "owid-poore-nemecek-food-ghg-2018"
      ]
    },
    {
      "id": "food-05",
      "type": "higher-lower",
      "prompt": "Which has the higher global-average greenhouse gas footprint per kilogram?",
      "functional_unit": "1 kilogram of product",
      "options": [
        {
          "id": "35953",
          "label": "Tomatoes",
          "value": 2.09
        },
        {
          "id": "34653",
          "label": "Milk",
          "value": 3.15
        }
      ],
      "correct_option_id": "34653",
      "explanation": "Milk is 3.15 kgCO2e/kg versus 2.09 kgCO2e/kg for Tomatoes in the same global-mean dataset.",
      "source_ids": [
        "owid-poore-nemecek-food-ghg-2018"
      ]
    },
    {
      "id": "food-06",
      "type": "higher-lower",
      "prompt": "Which has the higher global-average greenhouse gas footprint per kilogram?",
      "functional_unit": "1 kilogram of product",
      "options": [
        {
          "id": "204494",
          "label": "Tofu",
          "value": 3.16
        },
        {
          "id": "35979",
          "label": "Pig Meat",
          "value": 12.31
        }
      ],
      "correct_option_id": "35979",
      "explanation": "Pig Meat is 12.31 kgCO2e/kg versus 3.16 kgCO2e/kg for Tofu in the same global-mean dataset.",
      "source_ids": [
        "owid-poore-nemecek-food-ghg-2018"
      ]
    },
    {
      "id": "food-07",
      "type": "higher-lower",
      "prompt": "Which has the higher global-average greenhouse gas footprint per kilogram?",
      "functional_unit": "1 kilogram of product",
      "options": [
        {
          "id": "35908",
          "label": "Nuts",
          "value": 0.43
        },
        {
          "id": "91251",
          "label": "Peas",
          "value": 0.98
        }
      ],
      "correct_option_id": "91251",
      "explanation": "Peas is 0.98 kgCO2e/kg versus 0.43 kgCO2e/kg for Nuts in the same global-mean dataset.",
      "source_ids": [
        "owid-poore-nemecek-food-ghg-2018"
      ]
    },
    {
      "id": "food-08",
      "type": "higher-lower",
      "prompt": "Which has the higher global-average greenhouse gas footprint per kilogram?",
      "functional_unit": "1 kilogram of product",
      "options": [
        {
          "id": "35921",
          "label": "Bananas",
          "value": 0.86
        },
        {
          "id": "35943",
          "label": "Apples",
          "value": 0.43
        }
      ],
      "correct_option_id": "35921",
      "explanation": "Bananas is 0.86 kgCO2e/kg versus 0.43 kgCO2e/kg for Apples in the same global-mean dataset.",
      "source_ids": [
        "owid-poore-nemecek-food-ghg-2018"
      ]
    },
    {
      "id": "food-09",
      "type": "higher-lower",
      "prompt": "Which has the higher global-average greenhouse gas footprint per kilogram?",
      "functional_unit": "1 kilogram of product",
      "options": [
        {
          "id": "98413",
          "label": "Prawns (farmed)",
          "value": 26.87
        },
        {
          "id": "91267",
          "label": "Lamb & Mutton",
          "value": 39.72
        }
      ],
      "correct_option_id": "91267",
      "explanation": "Lamb & Mutton is 39.72 kgCO2e/kg versus 26.87 kgCO2e/kg for Prawns (farmed) in the same global-mean dataset.",
      "source_ids": [
        "owid-poore-nemecek-food-ghg-2018"
      ]
    },
    {
      "id": "food-10",
      "type": "higher-lower",
      "prompt": "Which has the higher global-average greenhouse gas footprint per kilogram?",
      "functional_unit": "1 kilogram of product",
      "options": [
        {
          "id": "246936",
          "label": "Soy milk",
          "value": 0.98
        },
        {
          "id": "34653",
          "label": "Milk",
          "value": 3.15
        }
      ],
      "correct_option_id": "34653",
      "explanation": "Milk is 3.15 kgCO2e/kg versus 0.98 kgCO2e/kg for Soy milk in the same global-mean dataset.",
      "source_ids": [
        "owid-poore-nemecek-food-ghg-2018"
      ]
    }
  ],
  "static_answer_table": [
    {
      "question_id": "food-01",
      "left": "Coffee",
      "left_value": 28.53,
      "right": "Cheese",
      "right_value": 23.88,
      "answer": "Coffee"
    },
    {
      "question_id": "food-02",
      "left": "Dark Chocolate",
      "left_value": 46.65,
      "right": "Beef (dairy herd)",
      "right_value": 33.3,
      "answer": "Dark Chocolate"
    },
    {
      "question_id": "food-03",
      "left": "Poultry Meat",
      "left_value": 9.87,
      "right": "Fish (farmed)",
      "right_value": 13.63,
      "answer": "Fish (farmed)"
    },
    {
      "question_id": "food-04",
      "left": "Rice",
      "left_value": 4.45,
      "right": "Eggs",
      "right_value": 4.67,
      "answer": "Eggs"
    },
    {
      "question_id": "food-05",
      "left": "Tomatoes",
      "left_value": 2.09,
      "right": "Milk",
      "right_value": 3.15,
      "answer": "Milk"
    },
    {
      "question_id": "food-06",
      "left": "Tofu",
      "left_value": 3.16,
      "right": "Pig Meat",
      "right_value": 12.31,
      "answer": "Pig Meat"
    },
    {
      "question_id": "food-07",
      "left": "Nuts",
      "left_value": 0.43,
      "right": "Peas",
      "right_value": 0.98,
      "answer": "Peas"
    },
    {
      "question_id": "food-08",
      "left": "Bananas",
      "left_value": 0.86,
      "right": "Apples",
      "right_value": 0.43,
      "answer": "Bananas"
    },
    {
      "question_id": "food-09",
      "left": "Prawns (farmed)",
      "left_value": 26.87,
      "right": "Lamb & Mutton",
      "right_value": 39.72,
      "answer": "Lamb & Mutton"
    },
    {
      "question_id": "food-10",
      "left": "Soy milk",
      "left_value": 0.98,
      "right": "Milk",
      "right_value": 3.15,
      "answer": "Milk"
    }
  ]
}