Now you know disasters

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.