Articles
Research, read for you.
Summaries of peer-reviewed studies on where personal emissions come from, and guides to measuring and cutting your own. Every figure links to its source; the emission factors are listed on the research page.
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One Percent of People, Half of Flying’s Emissions
A 2020 study in Global Environmental Change found about 11% of people flew in 2018, and the most frequent 1% caused over half of passenger aviation CO2.
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Goals, Streaks and One Daily Number
How Decarbonr turns carbon tracking into a habit: one daily number, quick logging, a daily goal, streaks and awards, with your entries stored on your device.
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Vegan, Vegetarian or Meat-Eater: What 55,000 UK Diets Reveal About Emissions
A 2023 Nature Food study of 55,504 UK diets found vegan diets had about a quarter of the greenhouse gas emissions of high meat-eaters. What it means for your footprint.
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Learn Climate Science While You Track Your Footprint
Decarbonr pairs a private carbon footprint tracker with a climate library: short explainers on climate science, energy, food, transport, policy and solutions, most with links to their sources.
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The Carbon Footprint of Food You Never Eat
The UN Food Waste Index Report 2024 found 1.05 billion tonnes of food wasted in 2022, 60% of it in households. What that means for your personal carbon footprint.
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Compare Your Carbon Footprint to Your Country’s Average
See how your yearly carbon estimate compares with your country’s average and with a 2-tonne target. Decarbonr tracks food, travel and 11 home and lifestyle trackers on iPhone and iPad.
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Carbon Labels Work at the Shelf, Not in Memory
Two pre-registered choice experiments (n = 715 and n = 1,233) published in Nutrients in 2025 tested how the proportion of carbon-labelled products changes food choices — and how long the effect lasts.
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Carbon Footprint Calculator vs. Daily Tracker
A one-off carbon calculator estimates a year from memory. A daily tracker builds it from what actually happened — food, travel and 11 home and lifestyle trackers, logged on your iPhone or iPad.
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Heating, Electricity, and the Other Nine
Heating, electricity, water, waste, digital use and more — Decarbonr’s Home tab has 11 trackers alongside food and travel, on iPhone and iPad, with entries stored on your device.
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The Quietest Fifth of Your Footprint
Residential energy is roughly 20% of US greenhouse gas emissions. What Goldstein, Gounaridis & Newell (2020, PNAS) found about floor space, grid mix and the limits of grid decarbonization.
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How to Find Lower-Carbon Alternatives That Actually Matter
Not every "eco-friendly" swap is worth making. A 4-step framework — Replace, Refine, Reduce, Retain — for picking real lower-carbon alternatives.
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What Actually Cuts Your Carbon Footprint
Most personal carbon advice targets small stuff. The changes that move the number are few, large, and unevenly distributed. How to find yours.
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What Is Your Daily Carbon Budget?
Your daily carbon budget is about 5.48 kg CO2e — a 2-tonne yearly target, a common shorthand for a 1.5°C lifestyle, divided by 365. See how fast one meal uses it.
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Why People Misjudge Which Choices Actually Cut Carbon
A 2024 Nature Climate Change study tested how well people rank the carbon impact of everyday behaviours, companies, and industries. The answer: barely better than chance.
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Scan a Barcode, See the Carbon
Decarbonr looks up grocery barcodes on Open Food Facts and estimates meals from a photo with AI, turning food into an estimated carbon number. No account needed.
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A Carbon Tracker With No Account to Create
Decarbonr tracks food, travel and 11 home and lifestyle trackers with no sign-up and nothing synced to a server. Your entries are stored on your device.
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Which Lifestyle Changes Cut the Most Carbon?
A systematic review in Environmental Research Letters screened 6,990 studies to rank 61 consumption options by climate impact. Here is what topped the list, and why measuring your own footprint comes first.
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Track Your Travel Carbon Footprint
By car, plane, train, bus, cruise, bike or on foot, Decarbonr estimates the carbon footprint of every trip using per-kilometer emission factors from the EEA and IPCC — and adds it to one clear daily number.
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How Small Diet Swaps Cut Your Food Carbon Footprint
A 2024 Nature Food study found that replacing half of red and processed meat with plant proteins can cut a diet's carbon footprint by up to 25%. Here's what the research shows and how to track it.