If you have a question, chances are someone else has that too. Post your questions here via this link.

Here are a few frequent Q&As.

Where does the term Technosphere come from?

The Cradle to Grave authors were the first to use the term, not in the book but later.

How much of that which society extracts is circular and how much is embedded in infrastructure?

About a quarter in terms of weight. There are several investigations we are checking and will get back to you with more detail.

What about the criticism of the Circular Economy?

We are onto it - we are planning a course on that. Some of it is well-founded.