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

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