The Most Horrifying Tragedies in History That Changed Everything

Whether caused by nature, negligence, or human cruelty, every tragedy on this list shares a common thread the gap between what people believed was safe and what actually was. Progress, it turns out, is often written in the aftermath of catastrophe. 00:00 Sinking Of The Titanic 01:13 The Chernobyl Disaster 02:20 The Septemper 11 Attacks 03:30 The Eruption of Mount Vesuvious 04:43 The Holocaust 05:54 The 2004 Indian Ocean Tsunami 07:00 The Hindenburg Disaster 08:08 The Space Shuttle Challenger Disaster 09:13 The Bhopal Gas Tragedy 10:21 Hurricane Katrina 11:26 The Black Death 12:34 The Halifax Explision 13:37 The Rwandan Genocide 14:47 The Great Chicago Fire 15:51 The 1918 Spanish Flu Pandemic