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In this week’s episode of Climate Confident, I sat down with Christopher Carrick, founder and CTO of Lignin Industries, to explore a game-changing innovation in the fight against plastic pollution, turning waste from the paper industry into carbon-negative bioplastics.

Christopher’s story starts in his kitchen, where curiosity (and a Star Wars ice-cube tray) led to a breakthrough: modifying lignin, the brown polymer in wood, so it can be melted, shaped, and blended into everyday plastics like polypropylene, polyethylene, and ABS. The result? Materials that can replace up to 40 percent of fossil plastics, perform just as well, and even smell faintly of forest.

We unpacked how this process works, why recyclability and stability are critical, and how Lignin’s bioplastics outperform many “green” alternatives by avoiding thermal degradation during recycling. Christopher also explains why regulation — not technology — is now the biggest bottleneck in decarbonising the plastics sector.

What struck me most is the scale of impact possible here. Plastics are one of the hardest sectors to clean up, yet Lignin’s approach shows that circularity, chemistry, and creativity can combine to make fossil-free materials commercially viable.

We also touched on scalability, partnerships, and the hope Christopher finds in consumers — the moment someone holds one of their wood-scented bags and realises that sustainability can feel good too.

🎧 Listen in to hear how lignin could transform the global plastics market — and why the future might just smell like trees.

👉 Available now on climateconfidentpodcast.com and all major podcast platforms.

Keywords: bioplastics, lignin, sustainable materials, circular economy, plastic recycling, decarbonisation, climate innovation, fossil-free plastics

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Credits
Music credits - Intro by Joseph McDade, and Outro music for this podcast was composed, played, and produced by my daughter Luna Juniper