★ 2023-08-25
A spirited tour of six material things on which our lives depend.

Sky News economics editor Conway, an inhabitant of the “ethereal world” in which ideas and services are bought and sold, opens his account with an eye-opening visit to a Utah gold mine where an entire mountain range is being removed in the quest for earthly riches. That hugely destructive pit is a comparative scratch in the ground, though, compared to a vast Chilean copper mine that “can produce comfortably more copper each year…as the amount of gold produced by every mine on the planet since the beginning of time.” Gold is somewhat inconsequential, while copper is essential to electronics. So is sand, one of the six commodities Conway examines in rich detail without his prose ever sliding into the miasmas of the dismal science. Sand contains silicon, which yields computer chips and “the fiber optics from which the internet is woven.” Silicon combines with cement and asphalt to make buildings and roads; iron provides the infrastructure of the built material world; salt yields hydrogen chloride, another component of computer chips and even solar panels; and oil is implicated in just about everything, including greenhouse-grown vegetables that feed the world. Even in an energy and material regime weaned from fossil fuels, Conway argues, fossil fuels will play a part—and getting that weaning accomplished, he adds, “will mean building untold new energy capacity across the world: solar panels, wind turbines and nuclear plants, a rate humankind has never before achieved.” Yet, he adds at the conclusion of this erudite exploration, which ably describes how his chosen commodities interact, it’s not an impossibility, thanks to his sixth element: lithium, the basis for the batteries that may lead the way to a renewable energy future. Of course, copper and glass will be involved, too.

Lively and impeccably written—a welcome addition to the way-the-world-works literature.