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• Summary Stats
• Topic Timeline (Monthly)
• Topic Timeline (Yearly)

	Natural Environment
	2010	2011	2012
Land
Surface Waters / Wetlands
Weather
	Unusual or Unexpected Event
	2010	2011	2012
Ice / Snow Change
Permafrost Change
Erosion
Extreme Wind
Sea/Land Level Change
Storm Surge
Earthquake
Flooding / Draining
Pollution
Tsunami
Extreme Precipitation
	Impact on Human Environment
	2010	2011	2012
Buildings
Transportation
Sanitation
Human Health
Water Security
Economic Impact
Energy
Food Security
Cultural Impact
Radiation
Safety