Over the past decade, as Justin Nobel traveled the country reporting on the oil and gas industry, he learned a disturbing and little-considered fact: a lot more comes to the surface at a well than just the oil and gas. Each year the industry produces billions of tons of waste--much of it toxic and radioactive. The fracking boom has only worsened the problem. So where does it all go?

Petroleum-238 provides the shocking answer. Shielded by a system of lax regulations and legal loopholes, this waste has been spilled, spread, injected, dumped, and freely emitted across America--from fertilizing crops to de-icing roads to even building school playgrounds. Nobel utilizes a century of academic research as well as a trove of never-before-released industry and government documents to explain how all this was allowed to happen. He also spends time in the nation's oilfields and surrounding communities speaking to workers, residents, scientists, and activists to understand the life-threatening impact this growing calamity poses to all Americans--and how it might be stopped.

In the tradition of Rachel Carson's Silent Spring, Petroleum-238 is both a landmark work of environmental writing and an urgent call to action.