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• Topic Timeline (Yearly)

	Natural Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020
Weather
Land
Surface Waters / Wetlands
Ocean / Sea
Air
Plants / Kelp
Microbes
Land Mammals
Fish
Insects
Marine Mammals
Birds
Arachnids
Invertebrates
Fungi
Amphibians
Reptiles
Groundwater
Other
	Unusual or Unexpected Event
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020
Extreme Temperature
Ice / Snow Change
Seasonal Timing
Drought
Extreme Precipitation
Death / Die-off / Decline
Flooding / Draining
Landslide / Avalanche
Erosion
Unusual Range / Sighting
Fire
Pollution
Extreme Wind
Deformity / Disease / Injury
Infestation
Algal Bloom
Unusual Animal Behavior
Unusual Size / Abundance
Cyclone / Hurricane
Storm Surge
Parasite
Permafrost Change
Earthquake
Sea/Land Level Change
Thunderstorm
	Impact on Human Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020
Human Health
Buildings
Sports / Recreation
Economic Impact
Cultural Impact
Transportation
Agriculture
Energy
Water Security
Safety
Harvest Change
Food Security
Livestock
Sanitation
Displacement
Pets
Forestry
Air Quality
Aquaculture
Burial Site
Fisheries