Rare events are events that occur with low or high frequency, and the term is often used in particular reference to infrequent or hypothetical events that have potentially widespread impact and which might destabilize society. Rare events encompass natural phenomena (major earthquakes, tsunamis, hurricanes, floods, asteroid impacts, solar flares, etc.).

1. INFREQUENT
EVENTS

2. INFREQUENT EVENTS
• Rare events are events that occur with low or high
frequency, and the term is often used in particular
reference to infrequent or hypothetical events that
have potentially widespread impact and which
might destabilize society. Rare events encompass
natural phenomena (major earthquakes, tsunamis,
hurricanes, floods, asteroid impacts, solar flares,
etc.).

3. INFREQUENT EVENTS
• Anthropogenic hazards (warfare and related forms
of violent conflict, acts of terrorism, industrial
accidents, financial and commodity market crashes,
etc.), as well as phenomena for which natural and
anthropogenic factors interact in complex ways
(epidemic disease spread, global warming-related
changes in climate and weather, etc.).