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• Topic Timeline (Yearly)

	Natural Environment
	2010	2011	2012	2013	2014	2015	2016	2017
Weather
Ocean / Sea
Land
Surface Waters / Wetlands
Plants / Kelp
Air
	Unusual or Unexpected Event
	2010	2011	2012	2013	2014	2015	2016	2017
Ice / Snow Change
Seasonal Timing
Extreme Temperature
Permafrost Change
Rain on Snow
Extreme Precipitation
Landslide / Avalanche
Flooding / Draining
Erosion
Extreme Wind
Unusual Range / Sighting
	Impact on Human Environment
	2010	2011	2012	2013	2014	2015	2016	2017
Transportation
Food Security
Buildings
Human Health
Economic Impact
Safety
Sanitation
Sports / Recreation
Cultural Impact
Energy
Water Security