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Nature got there first: wool is biogenic, biodegradable, and renewable. The new IWTO Green Book brings together peer-reviewed science on wool's environmental credentials, in one comprehensive source.
New peer-reviewed research demonstrates that accounting for biogenic carbon shows a truer picture of wool's emission intensity. Published in Agricultural Systems and verified by TÜV SÜD, the study applies ISO standard 14067:2018 to reveal wool's true environmental impact within natural carbon cycles.
When we launched the IWTO Green Book Project, we set out to address a fundamental challenge facing the wool industry: how can we accurately communicate wool's true environmental performance when current measurement systems were designed for factories, not biological systems? As we close out 2025, we take a look at what has been achieved...
Wool is a sustainable fibre with numerous environmental benefits. With a new free course from the Woolmark Learning Centre, you’ll learn just how good wool is.