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• Topic Timeline (Yearly)

	Natural Environment
	2019	2020	2021	2022	2023
Land
Weather
Surface Waters / Wetlands
Ocean / Sea
Plants / Kelp
Land Mammals
Air
Groundwater
Insects
Birds
Fish
Atmosphere
Arachnids
Invertebrates
Marine Mammals
Fungi
Reptiles
Amphibians
Microbes
	Unusual or Unexpected Event
	2019	2020	2021	2022	2023
Landslide / Avalanche
Extreme Precipitation
Permafrost Change
Erosion
Ice / Snow Change
Flooding / Draining
Fire
Extreme Temperature
Unusual Range / Sighting
Seasonal Timing
Drought
Extreme Wind
Death / Die-off / Decline
Sinkhole / Crater
Eruption
Storm Surge
Earthquake
Pollution
Rain on Snow
Glacier Change
Unusual Size / Abundance
Sea/Land Level Change
Infestation
Thunderstorm
Physical or Chemical Change
Debris / Trash
Tsunami
Unusual Animal Behavior
Cyclone / Hurricane
Deformity / Disease / Injury
Algal Bloom
Pathogen
	Impact on Human Environment
	2019	2020	2021	2022	2023
Safety
Buildings
Transportation
Human Health
Economic Impact
Sports / Recreation
Cultural Impact
Displacement
Energy
Sanitation
Air Quality
Food Security
Agriculture
Livestock
Water Security
Pets
Harvest Change
Burial Site
Forestry
Water Management
Fisheries
Communication
Relocation
TOURISM
Conflict