. . "Catastrophic" . . . . . . . . . "Disaster" . . "natural catastrophes" . . . . . . . . . . . . "calamities" . "Causes of hypothetical future disasters" . . "catastrophe" . "disasters" . "major catastrophic events" . . . "major accidents" . . "Disaster Impact" . . . "calamitous" . . . . . "debacle" . "cataclysm" . . . "catastrophic" . . . . . "general disaster" . . "calamity" . "catastrophes" . . "disastrous" . "Cataclysm" . "Debacle" . "national catastrophe" . "Catastrophes" . . "crises or collapse" . "Natural disasters" . "disaster" . "catastrophic disaster" . "Disaster" .