
What's Your Problem? The Ordinary Stuff Behind Technological Breakthroughs
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Sep 18, 2025 Ed Conway, an economics journalist and author of 'Material World,' dives into the impactful role of materials in advancing civilization. He reveals how glass drove scientific breakthroughs, linking Renaissance art to modern technology. Iron and coal's transformation led to the steam engine's rise, but today's steel production poses significant CO2 challenges. Meanwhile, copper is crucial for electrification yet faces scarcity and environmental hurdles. Conway emphasizes the trade-offs of materials, highlighting our past's influence on the future.
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Bessemer Made Steel Cheap
- The Bessemer process made steel cheap and mass-producible, transforming construction and manufacturing.
- Mass production of better steel lowered costs and changed economic possibilities.
Steelmaking's Carbon Problem
- Modern blast furnaces produce more CO2 by weight than the iron they output.
- Steelmaking is a major source of national carbon emissions and a core net-zero challenge.
Practical Path To Lower-Carbon Steel
- Expect green steel options like hydrogen DRI to remain costly and niche for now.
- Rely on recycling (electric arc furnaces) while seeking scalable low-carbon steel methods.








