Earthquakes, volcanic eruptions, tsunamis and tidal waves, fires, mine cave-ins, bridge collapses, ship sinkings, airplane crashes, explosions, and plagues -- natural and human-engineered calamity and catastrophe have many forms and guises. In Now You Know Disasters, Q & A ringmaster Doug Lennox showcases the what, why, when, where, who, and how of everything that's gone tragically and terribly wrong, past and present.

• How does a tsunami occur?
• Why do Canadian engineers wear iron rings?
• Who was Richter in the Richter scale?
• What was the worst freshwater ship disaster ever in North America?
• What is wildfire?
• Who was Typhoid Mary?
• How is "ring around the rosie" related to disaster?
• How did the Halifax Explosion occur?
• What was the worlds worst airplane crash?