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• Topic Timeline (Yearly)

	Natural Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022
Weather
Surface Waters / Wetlands
Land
Ocean / Sea
Marine Mammals
Land Mammals
Birds
Plants / Kelp
Fish
Invertebrates
Insects
Air
Microbes
Arachnids
Fungi
Atmosphere
Reptiles
Amphibians
Groundwater
	Unusual or Unexpected Event
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022
Ice / Snow Change
Seasonal Timing
Death / Die-off / Decline
Unusual Range / Sighting
Extreme Temperature
Extreme Precipitation
Flooding / Draining
Landslide / Avalanche
Deformity / Disease / Injury
Fire
Permafrost Change
Unusual Animal Behavior
Unusual Size / Abundance
Pathogen
Parasite
Drought
Pollution
Extreme Wind
Erosion
Glacier Change
Rain on Snow
Eruption
Algal Bloom
Cyclone / Hurricane
Infestation
Earthquake
Storm Surge
Debris / Trash
Sea/Land Level Change
Thunderstorm
Sinkhole / Crater
Tsunami
Physical or Chemical Change
	Impact on Human Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022
Human Health
Buildings
Transportation
Safety
Sports / Recreation
Economic Impact
Food Security
Sanitation
Livestock
Pets
Agriculture
Displacement
Air Quality
Energy
Cultural Impact
Fisheries
Water Security
Forestry
Burial Site
Aquaculture
Water Management
Harvest Change
TOURISM
Radiation