Fall Harvest Challenge

How much do you really know about natural cork?

Most people know cork as the closure that seals a bottle of wine. But that's only the beginning of the story.

Every quarter, the Natural Cork Council invites you to test your knowledge with a new Cork IQ Challenge exploring the remarkable world of cork—from harvest season and biodiversity to sustainability, architecture, design, and even space exploration.

This Fall Edition celebrates one of nature's most extraordinary harvests. Unlike timber, cork is harvested without cutting down the tree, allowing cork oak forests to thrive for generations while supporting wildlife, rural communities, and one of the world's most sustainable materials.

Win a pair of Birkenstocks

Answer the questions below, and you'll automatically be entered to win A Pair of BIRKENSTOCKS!

Cork isn’t just for wine bottles. It’s also at the heart of one of the world’s most recognizable shoes.

BIRKENSTOCK’s signature anatomically shaped footbed is made with cork and latex, using cork for its natural cushioning and insulating properties. This quarter, BIRKENSTOCK has generously donated a pair of shoes to one lucky Test Your Cork IQ winner.

Take the quiz. Test your cork knowledge. You could literally walk away in cork.

Ready?

Let's see how well you know cork.