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

	Natural Environment
	2010	2011	2012	2013
Land
Weather
Surface Waters / Wetlands
Ocean / Sea
Air
Plants / Kelp
	Unusual or Unexpected Event
	2010	2011	2012	2013
Ice / Snow Change
Permafrost Change
Flooding / Draining
Erosion
Extreme Temperature
Extreme Wind
Sea/Land Level Change
Storm Surge
Earthquake
Pollution
Tsunami
Extreme Precipitation
	Impact on Human Environment
	2010	2011	2012	2013
Buildings
Sanitation
Transportation
Water Security
Human Health
Economic Impact
Energy
Food Security
Cultural Impact
Radiation
Safety