Environmental Issue Articles

• Atmosphere
  Air Quality
  Air Pollution
  Climate
  Geochemistry
  Environmental Issues
   
  

  Earth's atmosphere

  Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly 78% nitrogen and 21% oxygen 0.97% argon and carbon dioxide 0.04% trace ... > more
• Recycling and Waste
  Environmental Issues
  Hazardous Waste
  Environmental Science
  Sustainability
  Energy and the Environment
   
  

  Recycling

  Recycling is the collection of used materials that would otherwise be waste to be broken down and remade into new products. Similarly, reuse is collecting waste such as food and drink containers to ... > more
• Water
  Drought Research
  Ecosystems
  Environmental Issues
  Pollution
  Sustainability
   
  

  Water resources

  Water resources are sources of water that are useful or potentially useful to humans. It is important because it is needed for life to exist. Many uses of water include agricultural, industrial, ... > more
• Environmental Policy
  Geography
  Environmental Issues
  Ecology
  Earth Science
  Global Warming
   

  Timeline of environmental events

  The timeline of environmental events is a historical account of events that have shaped humanity's perspective on the environment. This timeline includes some major natural events, man-made ... > more
• Global Warming
  Oceanography
  El Nino and La Nina
  Climate
  Floods
  Geography
   
  

  Sea level

  Mean sea level (MSL) is the average (mean) height of the sea, with reference to a suitable reference surface. Defining the reference level, however, involves complex measurement, and accurately ... > more
• Recycling and Waste
  Hazardous Waste
  Environmental Science
  Environmental Issues
  Pollution
  Water
   
  

  Sewage treatment

  Sewage treatment is the process that removes the majority of the contaminants from waste-water or sewage and produces both a liquid effluent suitable for disposal to the natural environment and a ... > more
• Weather
  Severe Weather
  Climate
  Atmosphere
  Hurricanes and Cyclones
  Global Warming
   
  

  Meteorology

  Meteorology is the scientific study of the atmosphere that focuses on weather processes and forecasting. Meteorological phenomena are observable weather events which illuminate and are explained by ... > more
• Global Warming
  Forest
  Air Quality
  Climate
  Rainforests
  Geochemistry
   
  

  Carbon dioxide sink

  A carbon dioxide (CO2) sink is a carbon reservoir that is increasing in size, and is the opposite of a carbon "source". The main natural sinks are the oceans and plants and other organisms that use ... > more
• Wildfires
  Oil Spills
  Rainforests
  Trees
  Ecology Research
  Ecology
   
  

  Controlled burn

  Prescribed or controlled burning is a technique sometimes used in forest management, farming, or prairie restoration. Fire is a natural part of both forest and grassland ecology and controlled fire ... > more
• Climate
  Global Warming
  Weather
  Environmental Issues
  Ice Ages
  Environmental Policy
   
  

  Climate

  The climate is the weather averaged over a long period of time. Weather is the combination of events in the atmosphere and climate is the overall accumulated weather in a certain location. Over ... > more

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