The Journalist Who Was There

In 2018, volcanologist Jeff Johnson stood on the rim of Volcán de Fuego in Guatemala just weeks before its catastrophic eruption. When the disaster struck and skeptics online questioned whether the warnings had been adequate, Johnson didn't argue theories. He pulled up his field recordings — the deep, guttural roar of the mountain, the thermal readings spiking on his instruments, the ash samples he had collected with his own hands.…