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

	Natural Environment
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Land
Surface Waters / Wetlands
Weather
Ocean / Sea
Land Mammals
Birds
Plants / Kelp
Marine Mammals
Fish
Groundwater
Insects
Invertebrates
Air
Atmosphere
Arachnids
	Unusual or Unexpected Event
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Erosion
Permafrost Change
Flooding / Draining
Ice / Snow Change
Extreme Precipitation
Seasonal Timing
Storm Surge
Extreme Wind
Death / Die-off / Decline
Extreme Temperature
Sinkhole / Crater
Unusual Range / Sighting
Sea/Land Level Change
Unusual Animal Behavior
Debris / Trash
Unusual Size / Abundance
Pollution
Thunderstorm
Fire
Pathogen
Drought
Parasite
Rain on Snow
	Impact on Human Environment
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Safety
Transportation
Buildings
Sanitation
Human Health
Water Security
Food Security
Water Management
Cultural Impact
Burial Site
Pets
Fisheries
Harvest Change
Energy
Communication
Forestry
Sports / Recreation