Emergency management Natural disasters Research Disaster relief Earthquakes Disasters Psychological aspects Natural disasters Tornadoes Disaster relief Research September 11 Terrorist Attacks, 2001 Earthquakes Psychological aspects Floods Disaster victims Mental health Hurricanes Hurricane Andrew, 1992 Hurricane Floyd, 1999 Hurricane Georges, 1998 Hurricane Hugo, 1989 Hurricanes Psychological aspects Natural disasters Psychological aspects Child disaster victims Mental health Flood damage prevention Natural disaster warning systems Disaster relief Psychological aspects Earthquake prediction Social aspects Flood damage Post-traumatic stress disorder Aircraft accidents Psychological aspects Building laws Buildings Natural disaster effects Disaster victims Psychology