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• Topic Timeline (Yearly)

	Natural Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020
Weather
Land
Ocean / Sea
Surface Waters / Wetlands
Land Mammals
Plants / Kelp
Marine Mammals
Air
Fish
Birds
Microbes
Invertebrates
Insects
Arachnids
Fungi
Amphibians
Other
Reptiles
	Unusual or Unexpected Event
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020
Ice / Snow Change
Extreme Temperature
Seasonal Timing
Unusual Range / Sighting
Erosion
Death / Die-off / Decline
Landslide / Avalanche
Pollution
Extreme Precipitation
Flooding / Draining
Unusual Size / Abundance
Drought
Permafrost Change
Unusual Animal Behavior
Fire
Earthquake
Extreme Wind
Storm Surge
Algal Bloom
Sea/Land Level Change
Cyclone / Hurricane
Deformity / Disease / Injury
Parasite
	Impact on Human Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020
Human Health
Transportation
Buildings
Economic Impact
Sports / Recreation
Food Security
Cultural Impact
Water Security
Energy
Sanitation
Harvest Change
Fisheries
Livestock
Agriculture
Safety
Displacement