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

	Natural Environment
	2010	2011	2012	2013	2014	2015
Weather
Land
Ocean / Sea
Surface Waters / Wetlands
Plants / Kelp
Air
	Unusual or Unexpected Event
	2010	2011	2012	2013	2014	2015
Ice / Snow Change
Seasonal Timing
Extreme Temperature
Permafrost Change
Landslide / Avalanche
Flooding / Draining
Erosion
Extreme Wind
Unusual Range / Sighting
Extreme Precipitation
	Impact on Human Environment
	2010	2011	2012	2013	2014	2015
Transportation
Food Security
Buildings
Human Health
Safety
Sanitation
Economic Impact
Cultural Impact
Energy
Water Security