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• Topic Timeline (Yearly)

	Natural Environment
	2013	2014	2015	2016	2017	2018	2019
Weather
Fish
Ocean / Sea
Land
Surface Waters / Wetlands
Plants / Kelp
Air
Land Mammals
Invertebrates
Birds
Marine Mammals
Insects
Reptiles
Microbes
Groundwater
Atmosphere
Arachnids
	Unusual or Unexpected Event
	2013	2014	2015	2016	2017	2018	2019
Extreme Temperature
Ice / Snow Change
Seasonal Timing
Death / Die-off / Decline
Extreme Precipitation
Drought
Unusual Range / Sighting
Extreme Wind
Permafrost Change
Unusual Animal Behavior
Erosion
Fire
Algal Bloom
Landslide / Avalanche
Flooding / Draining
Rain on Snow
Infestation
Glacier Change
Unusual Size / Abundance
Pollution
Storm Surge
Earthquake
Thunderstorm
Pathogen
	Impact on Human Environment
	2013	2014	2015	2016	2017	2018	2019
Human Health
Food Security
Transportation
Economic Impact
Sports / Recreation
Cultural Impact
Energy
Buildings
Water Security
Agriculture
Livestock
Air Quality
Pets
Aquaculture
Fisheries
Burial Site
Displacement