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• Topic Timeline (Yearly)

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