How one farm is testing multiple carbon-capture tricks all at once

Kade Wilbourne pulls a crane, several tons of volcanic rocks shoot the stadium behind us in a gray blue dust fan. We are sitting in the cockpit of a tractor on the Wilburn farm in McClansburg Province, Virginia. Usually, soybeans and corn are corn’s returns are measures that are more importantly here. But today, what matters is carbon.

The soil in farms like this is already a major carbon tank, contained in an organic form in the bodies of microbes …