Greatest Disasters

While everyone knows about Pompeii and Katrina, some of history's deadliest natural disasters have vanished from collective memory. We're counting down six catastrophic events—from China's forgotten flood to a European freeze that erased entire villages—that killed thousands yet somehow slipped through the cracks of history books. These are the disasters the world forgot, but the victims deserve to be remembered.

On November 13, 1985, the Colombian town of Armero was wiped off the map in less than two hours when a volcanic eruption 30 miles away sent a wall of mud, ash, and debris cascading down the mountain. This is the story of the warnings that went unheeded, the survivors who clung to rooftops in the darkness, and the little girl whose photograph became the haunting face of one of the deadliest volcanic disasters in recorded history.

Both make the ground beneath our feet betray us, but in dramatically different ways. We explore how earthquakes unleash energy built up over centuries in seconds, while sinkholes can form silently over years or swallow entire buildings in moments. From the 1906 San Francisco quake to Guatemala's catastrophic urban sinkholes, discover why solid ground isn't always so solid.

Sometimes the most devastating disasters don't claim the most lives. We're counting down seven catastrophic events—from volcanic eruptions to megaquakes—where the forces of nature unleashed their full fury, yet through extraordinary circumstances, the human toll remained shockingly low. These are the disasters where everything went wrong, except the body count.

On March 11, 2011, a magnitude 9.1 earthquake sent walls of water up to 130 feet high crashing into Japan's northeast coast, wiping entire towns off the map in minutes. We trace the tsunami from its undersea birth to its catastrophic landfall, following the stories of survivors who faced impossible choices and the nuclear plant workers who prevented an even greater catastrophe. This is the anatomy of the most expensive natural disaster in human history.

Two states, two recurring nightmares. While California battles ever-intensifying wildfires that devour entire communities in hours, Louisiana faces relentless hurricanes that drown cities and reshape coastlines. We explore how these contrasting disasters share surprising commonalities in human impact, economic devastation, and the impossible choices communities face when deciding whether to rebuild or retreat.

Some natural disasters don't just destroy—they permanently reshape the Earth itself. From the earthquake that made the Mississippi run backward to the volcanic eruption that created a brand new island overnight, we're counting down five catastrophes that literally redrew the world map.

On a quiet Sunday morning in Washington State, the entire north face of a mountain collapsed in the largest landslide in recorded history—triggering an eruption that would kill 57 people and reshape our understanding of volcanic monitoring. We explore the weeks of warning signs, the fateful decisions that kept people in the danger zone, and the story of David Johnston, the young volcanologist who radioed "Vancouver! Vancouver! This is it!" seconds before the blast consumed him.

These disasters shaped our planet

Natural Disasters best of episode!