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• Topic Timeline (Yearly)

	Natural Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
Land
Weather
Surface Waters / Wetlands
Plants / Kelp
Ocean / Sea
Air
Land Mammals
Birds
Invertebrates
Fish
Microbes
Insects
Marine Mammals
Atmosphere
	Unusual or Unexpected Event
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
Ice / Snow Change
Seasonal Timing
Permafrost Change
Glacier Change
Erosion
Extreme Temperature
Flooding / Draining
Storm Surge
Unusual Range / Sighting
Death / Die-off / Decline
Drought
Extreme Precipitation
Extreme Wind
Unusual Size / Abundance
Algal Bloom
Landslide / Avalanche
Fire
Earthquake
Eruption
Sinkhole / Crater
Infestation
	Impact on Human Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
Buildings
Human Health
Transportation
Sanitation
Agriculture
Economic Impact
Livestock
Energy
Sports / Recreation
Cultural Impact
Food Security
Air Quality
Displacement
Safety
Forestry