In the last chapter, we followed our heroes through a variety of packaging ownership models, from the wild autonomy of "bring-your-own" to tightly controlled pooling systems. Along the way, we discovered that each type of packaging is unique, and by choosing the proper tracking methods, we can keep them on the right path. Now, it is time to face another crucial challenge: ensuring they don't lose money along the way. If reusable packaging is to truly succeed, it's not enough to protect the environment; we must also uncover the treasure of profitability at every stop because businesses hesitate to leap into the unknown.

On the final day of the 4th round of negotiations for the United Nations’ Global Plastics Treaty in Ottawa, Willemijn Peeters, founder of Searious Business, gives us an update on her highlights from INC-4 thus far.