Steel. It’s strong, it dominates every modern city, and it’s supporting developing economies. But its production generates a lot of carbon emissions. What’s the answer? The Energy Podcast investigates.

Presented by Julia Streets. Featuring Professor Leora Dresselhaus-Marais from Stanford University and Lene Hviid from Shell’s metals division. Additional reporting by Judith Durkin.

The Energy Podcast is a Fresh Air Production for Shell. Edited by Claire Daley, production by Annie Day.