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• Topic Timeline (Yearly)

	Natural Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
Land
Ocean / Sea
Weather
Plants / Kelp
Surface Waters / Wetlands
Air
Birds
Fish
Land Mammals
Microbes
Insects
Invertebrates
Marine Mammals
Reptiles
Arachnids
Amphibians
Other
Fungi
Groundwater
	Unusual or Unexpected Event
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
Ice / Snow Change
Extreme Temperature
Seasonal Timing
Erosion
Extreme Precipitation
Flooding / Draining
Fire
Drought
Death / Die-off / Decline
Permafrost Change
Parasite
Earthquake
Extreme Wind
Unusual Size / Abundance
Algal Bloom
Unusual Range / Sighting
Pollution
Landslide / Avalanche
Unusual Animal Behavior
Infestation
Thunderstorm
Tsunami
	Impact on Human Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
Buildings
Human Health
Cultural Impact
Economic Impact
Transportation
Sports / Recreation
Sanitation
Water Security
Agriculture
Harvest Change
Livestock
Food Security
Pets
Energy
Air Quality
Water Management
Displacement
Forestry
Safety