On May 18, 1980, a magnitude-5.1 earthquake stripped the entire north face of Mount St. Helens in seconds, releasing the largest debris avalanche in recorded history. The episode asks whether the monitoring revolution that followed actually prepares us for the volcanic events capable of ending mass life on Earth. Ola and Amara move from the 4.2 cubic kilometers ejected at St. Helens up to the Siberian Traps' four million cubic kilometers of lava — the Large Igneous Province tied to the Permian-Triassic extinction event 252 million years ago — then work through the gas chemistry cascade and sill-emplacement mechanism that made the eruption so lethal. They close by stress-testing modern monitoring tools against a threat that has no cone, no point source, and no seismic spike to detect. Listeners will come away with a clearer sense of where volcanology's hard limits actually are.