![Harvesting oak bark for cork, Alentejo, Portugal](https://www.bkwine.com/wp-content/uploads/2019/05/z-ne28-8446-300x169.jpg)
The environmentally friendly cork stopper and why we should preserve the cork oak forest | Britt on Forbes
The cork oak is a unique tree. It gives us not only wine corks – still the world’s most popular closure – but also a forest habitat with tremendous biological diversity. A diversity we should