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

	Natural Environment
	2010	2011	2012
Land
Microbes
Surface Waters / Wetlands
Groundwater
	Unusual or Unexpected Event
	2010	2011	2012
Extreme Wind
Permafrost Change
Sea/Land Level Change
Algal Bloom
Drought
	Impact on Human Environment
	2010	2011	2012
Water Security
Sanitation
Buildings
Human Health
Economic Impact
Energy
Transportation