Vegan leathers are complicated by questions of commercial viability and sustainability. How do they compare to traditional leather? Change by degrees offers life hacks and sustainable living tips each Saturday to help reduce your household’s carbon footprint Got a question or tip for reducing household emissions? Email us at changebydegrees@theguardian.com In sustainable fashion, breathless promises about vegan leather have arrived thick and fast for over a decade. Innovations promise mushroom and cactus alternatives that look and feel like real leather – minus the negative associations with m

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