Ed Conway is an economics journalist and author of the book “Material World: The Six Raw Materials that Shape Modern Civilization.”
On today’s show, Ed reveals how three of those often-overlooked materials—iron, copper, and sand—shaped human advancement from the Renaissance to the Industrial Revolution to the digital age. And he talks about what they mean for our future.

Can We Slow Down Aging?
36:38

Why Doctors Use Evidence but Managers (Mostly) Don’t
41:33

The Job AI Was Supposed to Kill
39:40