Geographical Articles

• Weapons Technology
  Nuclear Energy
  Renewable Energy
  Energy and the Environment
  Physics
  Environmental Science
   
  

  Effects of nuclear explosions

  A nuclear explosion occurs as a result of the rapid release of energy from an uncontrolled nuclear reaction. The driving reaction may be nuclear fission, nuclear fusion or a multistage cascading ... > more
• Earthquakes
  Natural Disasters
  Tsunamis
  Energy and the Environment
  Renewable Energy
  Environmental Science
   
  

  Moment magnitude scale

  The moment magnitude scale was introduced in 1979 by Tom Hanks and Hiroo Kanamori as a successor to the Richter scale and is used by seismologists to compare the energy released by ... > more
• Insects (including Butterflies)
  Pests and Parasites
  Agriculture and Food
  Exotic Species
  Invasive Species
  Zoology
   
  

  Pest (animal)

  A pest is an animal which has characteristics which people regard as injurious or unwanted. An example of serious pests are those organisms which vector human disease, such as rats and fleas which ... > more
• Recycling and Waste
  Hazardous Waste
  Water
  Environmental Science
  Atmosphere
  Environmental Issues
   
  

  Septic tank

  A septic tank is part of a small scale sewage treatment system often referred to as a septic system, which consists of the tank itself and a septic drain ... > more
• Ancient Civilizations
  Volcanoes
  Archaeology
  Lost Treasures
  Natural Disasters
  Cultures
   
  

  Pompeii

  Pompeii is a ruined Roman city near modern Naples in the Italian region of Campania, in the territory of the commune of Pompei. It was destroyed during a catastrophic eruption of the volcano Mount ... > more
• Air Quality
  Air Pollution
  Pollution
  Environmental Science
  Environmental Issues
  Healthy Aging
   
  

  Atmospheric dispersion modeling

  Atmospheric dispersion modeling is the mathematical simulation of how air pollutants disperse in the ambient atmosphere. It is performed with computer programs that solve the mathematical equations ... > more
• Wildfires
  Natural Disasters
  Invasive Species
  Healthy Aging
  Oil Spills
  Accident and Trauma
   
  

  Fire fighting

  Firefighting is the act of extinguishing destructive fires. A firefighter fights these fires and prevents destruction of life, property and the environment. Firefighting is a highly technical ... > more
• Nuclear Energy
  Weapons Technology
  Energy and the Environment
  Mining
  Renewable Energy
  Pollution
   
  

  Uranium

  Uranium is a chemical element in the periodic table that has the symbol U and atomic number 92. Heavy, silvery-white, toxic, metallic, naturally radioactive, pyrophoric, and teratogenic uranium ... > more
• Insects (including Butterflies)
  Zoology
  Behavioral Science
  Animals
  Trees
  Pests and Parasites
   
  

  Insect

  Insects are invertebrate animals of the Class Insecta, the largest and (on land) most widely-distributed taxon within the Phylum Arthropoda. Insects comprise the most diverse group of animals on the ... > more
• Nature
  Weather
  Wild Animals
  Rainforests
  Animals
  Marine Biology
   
  

  Camouflage

  Camouflage is the method which allows an otherwise visible organism or object to remain indiscernible from the surrounding environment. Examples include a tiger's stripes and the battledress of a ... > more

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