Knowledge Hub is an open access collaborative library of circular economy case studies from Europe and around the world. It contains over 2000 case studies.

Knowledge Hub is based on the following three principles:

• Everyone contributes: the knowledge base grows quicker if everybody adds case studies.

• Everyone edits: It's not meddling, it's co-authoring! Version history ensures nothing is lost.

• Everyone curates: See any irrelevant, duplicate or promotional content? Report it to the Knowledge Hub admins!