What Went Wrong: Countdown to Catastrophe

On Aug. 14, 2018, the Morandi Bridge in Genoa, Italy, collapses, sending vehicles and tons of rubble to the ground 50 meters below and killing 43 people.

Seventy-two people die in June 2017 when a fire destroys London's Grenfell Tower, one of the United Kingdom's worst modern disasters.

A high-speed Deutsche Bahn train traveling at 200 kph on June 3, 1998, derails and crashes into a road bridge near the village of Eschede in northern Germany, killing 101 and injuring 100.

Seven crew members die, and the shuttle program is suspended on Jan. 28, 1986, when the space shuttle Challenger breaks apart just 73 seconds after launch.

On July 25, 2000, Concorde Air France Flight 4590 crashes shortly after take off from Charles de Gaulle airport, in Paris, killing all 109 people aboard in a fiery crash.

The missing Malaysia Airlines MH370 plane, the most mysterious aircraft accident since the disappearance of Amelia Earhart, disappears in March 2014 with all 239 occupants.