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• Summary Stats
• Topic Timeline (Monthly)
• Topic Timeline (Yearly)

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