The Chernobyl nuclear disaster was a catastrophe that changed the course of human history, and now, new discoveries reveal the real reasons behind the explosion that spawned a deadly radioactive ghost town and brought down an empire.

NASA's Space Shuttle Challenger was a deadly disaster that changed the course of space exploration forever, and now, new discoveries reveal the truth behind the structural failure that tore the rocket apart.

New discoveries are challenging everything we know about the sinking of the Titanic, revealing that the disaster wasn't caused by a freak accident and that it may have been doomed from the start.

After torrential rainfall triggers a catastrophic landslide, a small village in the valley below is devastated, and now, new discoveries reveal the truth behind the engineering that led to this fatal disaster.

When a cruise ship meets disaster, the ship begins to sink and the captain flees, leaving 300 passengers stranded; now, new discoveries reveal the fatal truth behind the devastating wreck that claimed 32 lives.

The Concorde was the supersonic passenger plane that could fly from New York to London in under four hours. But after a fatal accident kills 100, experts reveal a secret history of the iconic aircraft that led to this devastating.

Hurricane Katrina is one of the worst natural disasters to ever strike American soil, but as the storm revealed widespread construction failures, it's a tragedy of engineering, too; the latest science reveals how.

After a high-speed collision of three trains during rush hour in London causes dozens of deaths, experts use the latest tech to investigate what caused this catastrophic crash; what they find could hold the secrets of preventing future disasters.

When a series of accidental explosions erupt at a chemical factory, they completely destroy the area nearby, and now, new discoveries the real reasons behind the deadly chemical fireball that left a giant crater where there was once a building.

When an eight-story factory suddenly collapses, over 1,000 people die in one the deadliest engineering disasters in modern history; experts use cutting-edge tech to reveal what went wrong and what's being done to prevent the next catastrophe.

On a test flight for an experimental Virgin Galactic spacecraft, catastrophic design flaws send this multi-million dollar endeavor on a crash course to tragedy; experts investigate what caused this visionary engineering marvel to fail.

When the Exxon Valdez oil tanker spills millions of gallons of crude oil at sea, it contaminates Alaska's pristine coastline and creates an apocalyptic environmental catastrophe. Experts investigate what caused this horrific disaster.

Engineers investigate the cause of the space shuttle Columbia disaster.

Experts look into why Los Angeles wasn't prepared for a deadly earthquake.

The disaster of Air France Flight 447 and the crash of NASA's Skylab in 1979 are catastrophes of aviation with a mysterious legacy; experts investigate these historic tragedies to determine what caused these monumental failures of flight.

When London's Grenfell Tower catches fire, its hundreds of residents must escape a deadly inferno; expert engineers investigate and reveal how the building's engineering caused the disaster to tragically escalate.

The nuclear meltdown of Three Mile Island in Pennsylvania (1979) and the deadly hydroelectric turbine tragedy at the Sayano-Shushenskaya Dam in Russia (2009) were power plant disasters of an unprecedented scale; experts examine the aftermath of these fatal catastrophes and explore their lasting consequences.

Expert scientists reveal how flawed operational procedures escalated a Japanese tragedy and one of the most catastrophic nuclear disasters in history.

The 2010 earthquake in Haiti was one of the world's most deadly natural disasters that left much of the island nation in ruins; experts investigate and reveal how a lack of construction safety measures resulted in such catastrophic destruction.