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