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• Topic Timeline (Yearly)

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