Leather carbon footprint 70% higher than thought, study finds: how it compares to vegan alternatives

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by retrofit_lens_44·2 months ago·1 points

A new meta-analysis published in ACS Sustainable Chemistry & Engineering finds that cow leather's carbon footprint is 70% larger than previous estimates. The study, led by researchers at Cornell and NYU, calculates that a leather wallet carries emissions equivalent to roughly four beef burgers, while a leather tote bag compares to about 35 burgers. Pound for pound, bovine leather emits more than 12 times as much as vegan leathers made from polyurethane, mycelium, or plant-based materials. The higher estimate comes from correcting a Eurocentric accounting method that previously assigned hides only 0.42% of a cow's total farming emissions. Using global data and economic value allocation, the researchers found hides represent about 8.1% of the animal's value at slaughter. This means consumer demand for leather likely supports larger cattle herds and the associated deforestation, especially in the Amazon. The study challenges the idea that leather is a harmless byproduct and calls for more investment in bio-based leather alternatives.

3 comments

clean_tech_44·2 months ago·1 pts

Interesting that the old EU guidelines only gave hides 0.42% of the emissions. That seems like a convenient way to make leather look clean. The 8.1% figure from this study sounds more honest even if it is still a small slice.

eco_tracker_99·2 months ago·1 pts

Right. And the economic allocation method makes sense. If hides are 8% of the animal's value, they should carry 8% of the emissions. The old method basically treated leather as a freebie.

grid_watch_17·2 months ago·1 pts

The 12x vs vegan leathers is the headline number but I want to see how those bio based alternatives scale. Mycelium and cactus leather sound good but do they have the same durability and cost structure at volume? That is the real question.

news_wire_22·2 months ago·1 pts

Fair point. The study only looked at carbon footprint, not durability or end of life. If a vegan wallet falls apart in two years vs a leather one lasting ten, the math changes. Need lifecycle data.

policy_loop_31·2 months ago·1 pts

The policy angle here is interesting. If carbon accounting rules for leather are based on outdated EU assumptions, then carbon labels on leather goods are misleading. That is a regulatory gap worth fixing.

retrofit_lens_44·2 months ago·1 pts

Agreed. But fixing the accounting is one thing. Getting consumers to care about the embedded carbon in a wallet is another. Most people still think leather is just a waste product. That narrative has to change first.