Geographical Articles

• Earth Science
  Sports Science
  Geology
  Near-Earth Object Impacts
  Environmental Issues
  Earthquakes
   
  

  Foucault pendulum

  A Foucault pendulum, or Foucault's pendulum, named after the French physicist Leon Foucault, was conceived as an experiment to demonstrate the rotation of the Earth; its action is a result of the ... > more
• Climate
  Atmosphere
  Earth Science
  Floods
  Severe Weather
  Global Warming
   
  

  Jet stream

  Jet streams are fast flowing, relatively narrow air currents found in the atmosphere at around 12 km above the surface of the Earth, just under the tropopause. They form at the boundaries of adjacent ... > more
• Ozone Holes
  Environmental Issues
  Air Quality
  Air Pollution
  Pollution
  Atmosphere
   
  

  Ozone

  Ozone (O3) is an allotrope of oxygen, the molecule consisting of three oxygen atoms instead of the more stable diatomic O2. Ozone is a powerful oxidizing agent. It is present in low concentrations ... > more
• Hurricanes and Cyclones
  Severe Weather
  Storms
  Weather
  Oil Spills
  Geography
   
  

  Hurricane Dennis

  Hurricane Dennis was the fourth named storm, second hurricane, and first major hurricane of the 2005 Atlantic hurricane season. In July, the hurricane set several records for early season hurricane ... > more
• Hurricanes and Cyclones
  Severe Weather
  Floods
  Natural Disasters
  Weather
  Oil Spills
   
  

  Effect of Hurricane Katrina on New Orleans

  The effect of Hurricane Katrina on New Orleans was catastrophic and long-lasting. The storm, which was the costliest hurricane as well as one of the deadliest natural disasters in U.S. history, made ... > 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
• Water
  Natural Disasters
  Floods
  Geology
  Earth Science
  Earthquakes
   
  

  Quicksand

  Quicksand is loose, water-logged soil that yields easily to weight or pressure. It can be formed when sand, silt, clay, or other grainy soil is saturated or supersaturated by water flowing from below ... > more
• Organic Chemistry
  Geochemistry
  Chemistry
  Biochemistry
  Acid Rain
  Pollution
   
  

  Phosphate

  In inorganic chemistry, a phosphate is a salt of phosphoric acid. Phosphates are also important in biochemistry. Surface runoff of phosphates from excessively fertilized farmland can be a cause of ... > more
• Nature
  Ecology
  Ecology Research
  New Species
  Exotic Species
  Extinction
   
  

  Ecological niche

  In ecology, a niche is a term describing the relational position of a species or population in an ecosystem. More formally, the niche includes how a population responds to the abundance of its ... > 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

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