A sudden calamitous event, causing great loss of life, damage, or hardship, like a flood, a tornado, an airplane crash, or an earthquake. This is not only a documentary but a live account of dramatic events in real time. In this unique 13- part series you'll be an eyewitness to some of the greatest disasters of the last 100 years and you will have a rare opportunity to compare disasters across time and distance and decide which you think is the worst.