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However if the calories from your walk come from beef ...

100g of beef gives you 217 kcal [1], so you need 33g of beef for your walk

Carbon cost for beef is 99.48 kg CO₂e/kg [2]

So walking one mile fueled by beef creates ~3.3kg of carbon emissions, over 8 times what would be emitted if you drove

[1] https://www.healthline.com/nutrition/foods/beef#nutrition [2] https://www.statista.com/statistics/1201677/greenhouse-gas-e...

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Oh and it turns out the carbon footprint for beef varies significantly by where the beef is raised. Average carbon footprint per 1kg of beef in the EU is 22.1 kg CO₂e [1], so if you're in the EU your beef-fueled 1 mile walk emits ~730g of CO₂e, a little under twice what you'd have emitted if you drove

[1] https://www.thebeefsite.com/news/33676/uk-beef-carbon-footpr...

[burntwater]

If I'm reading this right it's not quite apples for apples, as it's comparing the cost to create and move the beef, but doesn't consider the cost to create the car, only the movement of the car.

[scott_w]

Except the only people who eat that much beef are certainly not walking anywhere so it’s a fun “statistic” that has no basis in reality.