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

	Natural Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018
Surface Waters / Wetlands
Weather
Land
Ocean / Sea
Air
Microbes
Groundwater
	Unusual or Unexpected Event
	2010	2011	2012	2013	2014	2015	2016	2017	2018
Drought
Permafrost Change
Erosion
Flooding / Draining
Extreme Wind
Extreme Temperature
Glacier Change
Ice / Snow Change
Pollution
Earthquake
Landslide / Avalanche
Seasonal Timing
Thunderstorm
Sea/Land Level Change
Algal Bloom
	Impact on Human Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018
Water Security
Sanitation
Human Health
Buildings
Energy
Economic Impact
Food Security
Agriculture
Aquaculture
Transportation