In this episode of Building Science Digest, we chat with Dennis Wilson, VP, ESG & Managing Director, Circular Economy Solutions North America at Saint-Gobain North America, to unpack one of the most important shifts in sustainable construction: the move from a linear economy to a circular economy.

Dennis explains what the circular economy really means, how it reduces waste, recirculates materials, and helps regenerate nature.

This episode explores how Saint-Gobain is leading the charge through initiatives like recycling glass from skyscrapers into new insulation, cutting CO₂ emissions, and why understanding Scope 1, 2, and 3 emissions is critical to building a truly sustainable future.

Listeners will learn:

The difference between linear, cradle-to-grave systems and circular, cradle-to-cradle design

How circular practices create both environmental and economic value

Real-world examples of material re-use in building products like gypsum and glass

What contractors, customers, and communities can do to support circularity

Why data, design, and reverse supply chains are essential to making it work

Whether you are a builder, architect, or sustainability enthusiast, this conversation will give you a clear and practical understanding of how circular economy principles are transforming the built environment and what it means for the future of construction.