Food production accounts for approximately 26% of global greenhouse gas emissions, according to Poore and Nemecek (2018) in Science. At the individual level, diet contributes
A standard cheeseburger — beef patty, cheese, bun, condiments — carries an estimated 3–4 kg CO₂e per serving, based on lifecycle assessment data. The beef
A carbon footprint is calculated by multiplying activity data — a measurable quantity like miles driven or kilowatt-hours consumed — by a verified emission factor
Most people underestimate their carbon footprint — often by a factor of two to three times. This isn’t ignorance. It’s the result of specific, well-documented
The carbon footprint per mile driven in the US depends primarily on one variable: fuel efficiency. A standard 25 MPG gasoline car emits approximately 0.36
US CO₂ per capita has fallen from roughly 20.4 tons CO₂e in 2000 to around 15.5 tons CO₂e in 2022 — a 24% reduction over
The carbon footprint of a flight in the US ranges from 0.296 tCO₂e for a short domestic round trip to 0.775 tCO₂e for a transatlantic
The average carbon footprint per person is approximately 6.6 tons CO₂e per year globally, based on 2023 data from the University of Michigan Center for
Most people who calculate their carbon footprint do it once. They get a number, feel something, and move on. A year later, they have no