Unlike conventional supply chains, green supply chains are designed to ensure that value creation, rather than risk and waste, accumulates at each step, from design to disposal and recovery. As a primer, this note is suitable for undergraduate, MBA, or executive students exploring corporate response to environmental degradation, rising energy and materials prices, and the growing challenges of international global supply chains. Managing complex relationships and flows of materials across companies and cultures poses a key challenge for green supply chains. But "greening" a supply chain nets many benefits.