Tundra Articles

• Mining
  Environmental Science
  Engineering
  Civil Engineering
  Sports Science
  Energy Technology
   
  

  Mining

  Mining is the extraction of valuable minerals or other geological materials from the earth, usually (but not always) from an ore body, vein, or (coal) ... > more
• Geology
  Earthquakes
  Natural Disasters
  Sports Science
  Earth Science
  Geography
   
  

  Geologic fault

  Geologic faults or simply faults are planar rock fractures which show evidence of relative movement. Large faults within the Earth's crust are the result of shear motion and active fault zones are ... > more
• Air Pollution
  Acid Rain
  Geochemistry
  Organic Chemistry
  Soil Types
  Organic
   
  

  Nitrogen

  Nitrogen is the chemical element in the periodic table that has the symbol N and atomic number 7. Nitrogen constitutes 78 percent of Earth's atmosphere and is a constituent of all living tissues. ... > 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
• Near-Earth Object Impacts
  Earth Science
  Geology
  Earthquakes
  Environmental Issues
  Geomagnetic Storms
   
  

  Impact event

  Impact events are caused by the collision of large meteoroids, asteroids or comets (generically: bolides) with Earth and may sometimes be followed by mass extinctions of ... > more
• Hurricanes and Cyclones
  Severe Weather
  Natural Disasters
  Tornadoes
  Energy and the Environment
  Renewable Energy
   
  

  Hurricane preparedness

  Hurricane preparedness includes actions taken before a tropical cyclone strikes to mitigate the damage and personal danger such storms can cause. ... > more
• Healthy Aging
  Attention Deficit Disorder
  Food Additives
  Sports Science
  Sports Medicine
  Chemistry
   
  

  Chlorine

  Chlorine is the chemical element with atomic number 17 and symbol Cl. It is a halogen, found in the periodic table in group 17. As the chloride ion, which is part of common salt and other compounds, ... > more
• Vitamin D
  Healthy Aging
  Optics
  Attention Deficit Disorder
  Geomagnetic Storms
  Sports Science
   
  

  Ultraviolet

  Ultraviolet (UV) radiation is electromagnetic radiation of a wavelength shorter than that of the visible region, but longer than that of soft X-rays. The Sun emits ultraviolet radiation in the UVA, ... > more
• Hazardous Waste
  Sports Science
  Chemistry
  Organic Chemistry
  Construction
  Physics
   
  

  Arsenic

  Arsenic is a chemical element in the periodic table that has the symbol As and atomic number 33. This is a notoriously poisonous metalloid that has three allotropic forms; yellow, black and grey. ... > more
• Air Pollution
  Air Quality
  Atmosphere
  Pollution
  Environmental Science
  Environmental Issues
   
  

  Inversion (meteorology)

  A temperature inversion is a meteorological phenomenon in which air temperature increases with height for some distance above the ground, as opposed to the normal decrease in temperature with height. ... > more

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