Plastic is one of the most transformative materials of the modern age. It’s in our cars, our homes, and our clothes. Lightweight, durable, and endlessly moldable, plastic has revolutionized manufacturing and design across nearly every industry. But this material comes with a serious downside: it’s incredibly difficult to dispose of in the right way.

Researchers and companies around the globe are racing to tap into an invisible resource seen as a beacon of hope for achieving climate neutrality—hydrogen. Could the key to a green transformation lie beneath our very feet?

SUBSTANCE is a monthly podcast exploring the materials that shape our world. From hydrogen and plastic to fabric and fungi, each episode unpacks one essential substance — revealing its influence on our world and the surprising innovations that could redefine its role in our lives. In conversations with leading scientists and industry experts, host Joe Hanson offers fresh perspectives on how chemistry and innovation can help us tackle some of the world’s toughest challenges. Whether you’re a curious mind, a science enthusiast, or someone who simply wonders about the “stuff” all around us, SUBSTANCE tells the stories that matter — one material at a time.