Looks at the story behind the huge volcanic eruption of Mount St Helens in the USA in May 1980, the devastation, damage and environmental impact it had, and the scientific investigation into why it happened.
Documentary looking at the causes of the TWA plane explosion that occurred mid-air off Long Island in July 1996. Initially thought by the FBI to be a terrorist attack, prolonged investigation could not provide any evidence to verify this supposition. Theories eventually changed to the consideration that something aboard the aircraft had simply gone wrong, turning the plane into a time bomb.
