Environmental Policy Articles

• Acid Rain
  Pollution
  Air Pollution
  Organic Chemistry
  Biochemistry
  Environmental Issues
   
  

  Acid

  An acid (often represented by the generic formula HA) is traditionally considered any chemical compound that, when dissolved in water, gives a solution with a pH of less than 7.0. That approximates ... > more
• Tornadoes
  Severe Weather
  Climate
  Natural Disasters
  Weather
  Storms
   
  

  May 2003 Tornado Outbreak Sequence

  The May 2003 Tornado Outbreak Sequence in the United States was a series of tornado outbreaks that occurred from May 3 to May 11, 2003. There were 401 tornado reports in 19 states, 1,587 reports of ... > more
• Tsunamis
  Natural Disasters
  Earth Science
  Geomagnetic Storms
  Geology
  Near-Earth Object Impacts
   
  

  Tide

  Tides are the cyclic rising and falling of Earth's ocean surface caused by the tidal forces of the Moon and the Sun acting on the Earth. Tides cause changes in the depth of the sea, and also produce ... > more
• Microbes and More
  Microbiology
  Fungus
  Soil Types
  Developmental Biology
  Organic
   

  Microorganism

  A microorganism or microbe is an organism that is so small that it is microscopic (invisible to the naked eye). Microorganisms are often illustrated using single-celled, or unicellular organisms; ... > more
• Volcanoes
  Natural Disasters
  Earthquakes
  Near-Earth Object Impacts
  Geography
  Tsunamis
   
  

  Caldera

  A caldera is a volcanic feature formed by the collapse of a volcano into itself, making it a large, special form of volcanic crater. A caldera collapse is usually triggered by the emptying of the ... > more
• Botany
  Ecology
  Ecology Research
  Marine Biology
  Sea Life
  Nature
   
  

  Phytoplankton

  Phytoplankton refers to the autotrophic component of the plankton that drifts in the water column. Most phytoplankton are too small to be individually seen with the unaided eye. Phytoplankton, like ... > more
• Water
  Geography
  Floods
  Drought Research
  Environmental Policy
  Ecosystems
   
  

  Waterfall

  A waterfall is usually a geological formation resulting from water, often in the form of a stream flowing over an erosion-resistant rock formation that forms a sudden break in ... > more
• Geology
  Sports Science
  Climate
  Energy and Resources
  Chemistry
  Inorganic Chemistry
   
  

  Metamorphic rock

  Metamorphic rock is the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism, which means "change in form". The protolith is subjected to heat and ... > more
• Hurricanes and Cyclones
  Severe Weather
  Earth Science
  Climate
  Geomagnetic Storms
  Weather
   
  

  Season

  A season is one of the major divisions of the year, generally based on yearly periodic changes in weather. In temperate and polar regions generally four seasons are recognized: spring, summer, ... > more
• Organic
  Soil Types
  Botany
  Agriculture and Food
  Endangered Plants
  Sustainability
   

  Organic lawn management

  Organic lawn management is the practice of establishing and caring for a garden lawn without the use of chemical inputs such as pesticides or artificial fertilisers. The garden lawn is a place where ... > more

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