Empreintes carbone personnelles, avec les barres d'erreur indiquées

La plupart des conseils sur le carbone pour les consommateurs classent les actions par leur vertu perçue. L'évaluation du cycle de vie les classe par leur ampleur, et les deux classements se chevauchent à peine.

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Une seule éolienne se tenant au-delà d'un champ récolté sous un ciel dégagé.
U.S. Fish and Wildlife Service - Midwest Region · Public domain · Wikimedia Commons

The ordering problem

Recycling, turning off lights and avoiding plastic bags dominate the public conversation and are among the smallest levers available. Heating, flying, driving and diet dominate an actual household footprint. The gap between what people do and what matters is the single most useful thing this site can point at.

Food

The food footprint

Dietary shift has real, measurable effects — and the variation within a food category can exceed the variation between categories.

Aviation

Flying and non-CO₂ effects

Contrails and other non-CO₂ effects roughly double aviation's warming impact, and most calculators ignore them.

Tools

Do carbon calculators work?

They have been evaluated. Their value is educational rather than accounting — the uncertainty is very large.

Lectures connexes

Weight Loss Evidence

Diets, drugs, behaviour and maintenance — ranked by the strength of the evidence behind them.

Celiac Wire

Coeliac disease news, guidelines and research — plus the practical business of eating.

EV Ground Truth

Electric cars reviewed on real range, charging behaviour and life-cycle emissions.

The Book Verdict

Health, science and self-improvement books fact-checked against the literature they cite.

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