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• Topic Timeline (Monthly)
• Topic Timeline (Yearly)

	Natural Environment
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Land
Ocean / Sea
Surface Waters / Wetlands
Weather
	Unusual or Unexpected Event
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Earthquake
Eruption
Tsunami
Erosion
Ice / Snow Change
	Impact on Human Environment
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Buildings
Sanitation
Transportation
Safety
Energy
Displacement
Cultural Impact