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• Topic Timeline (Monthly)
• Topic Timeline (Yearly)

	Natural Environment
	2020
Weather
Ocean / Sea
Surface Waters / Wetlands
Air
Land
Insects
Fish
Plants / Kelp
Invertebrates
Land Mammals
Atmosphere
Birds
Marine Mammals
Arachnids
	Unusual or Unexpected Event
	2020
Extreme Temperature
Fire
Ice / Snow Change
Permafrost Change
Unusual Range / Sighting
Unusual Size / Abundance
Glacier Change
Flooding / Draining
Seasonal Timing
Pathogen
Extreme Precipitation
Rain on Snow
Extreme Wind
Death / Die-off / Decline
Infestation
Pollution
	Impact on Human Environment
	2020
Safety
Human Health
Sports / Recreation
Buildings
Cultural Impact
Air Quality
Economic Impact
Forestry
Energy
Food Security
Livestock
Fisheries
Agriculture
Pets
Transportation
Displacement
Harvest Change