Waste is the fourth biggest sector of greenhouse gas emissions. In a natural ecosystem, everything is used and recycled. But our human-made production model begins with resource extraction, moves through processing to purchasing and using the items we need—and when we’re finished with them, we throw them out and start all over again. In this episode, we examine what’s being done to minimize waste and mitigate pollution so we get our model closer to nature’s.  Featuring Prakash Arunkundrum, Head of Global Operations & Sustainability, Logitech, Ratish Namboothiry, Director, Innovation for Good & Sustainability, Kohler, Keiran Olivares Whitaker, Founder, Entocycle, and Shalini Unnikrishnan, Managing Director and Partner, Boston Consulting Group.  Sustainability, Inc., is a new limited-series podcast from Boston Consulting Group, produced by FORTUNE Brand Studio, without the participation of the Fortune editorial staff. The views and opinions expressed by podcast speakers and guests are solely their own and do not reflect the opinions of Fortune.