Environmental Issue Articles

• Geography
  Tundra
  Mammals
  Wild Animals
  Nature
  Animals
   
  

  Reindeer

  The reindeer, known as caribou when wild in North America, is an Arctic and Subarctic-dwelling deer. About 1 million live in Alaska, and a comparable number live in northern Canada. There are an ... > more
• Fossils
  Paleontology
  Dinosaurs
  Early Climate
  Early Mammals
  Ecology
   
  

  Trace fossil

  Trace fossils are those details preserved in rocks that are indirect evidence of life. While we are most familiar with relatively spectacular fossil hard part remains such as shells and bones, trace ... > more
• Earthquakes
  Natural Disasters
  Tsunamis
  Geology
  Earth Science
  Geography
   
  

  New Madrid Seismic Zone

  The New Madrid Seismic Zone, also known as the Reelfoot Rift or the New Madrid Fault Line, is a major seismic zone located in the Midwestern United ... > more
• Fisheries
  Mating and Breeding
  Fish
  Animals
  Invasive Species
  Wild Animals
   
  

  Horseshoe crab

  The horseshoe crab (Limulus polyphemus) is an arthropod that is more closely related to spiders than crabs. Horseshoe crabs possess the rare ability to regrow limbs lost. Limulus has been extensively ... > more
• Geography
  Geology
  Earth Science
  Earthquakes
  Oceanography
  Drought Research
   
  

  Pangaea

  Pangaea or Pangea is the name given to the supercontinent that existed during the Paleozoic and Mesozoic eras, before the process of plate tectonics separated each of the component continents into ... > 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
• Mining
  Geology
  Earth Science
  Geochemistry
  Oceanography
  Earthquakes
   
  

  Quartz

  Quartz is one of the most common minerals in the Earth's continental crust. It belongs to the hexagonal crystal system, and is made up of silica (SiO2) tetrahedra. Quartz has a hardness of 7 on the ... > more
• Fish
  Fisheries
  Marine Biology
  Sea Life
  Wild Animals
  Zoology
   
  

  Fish

  Fish are aquatic vertebrates that are typically cold blooded, covered with scales, and equipped with two sets of paired fins and several unpaired fins. Fish are abundant in the sea and in ... > more
• Hurricanes and Cyclones
  Severe Weather
  Storms
  Weather
  Geography
  Rainforests
   
  

  Typhoon Tip

  Typhoon Tip was the most intense and largest tropical cyclone on record. The storm weakened greatly before landfall, but still caused widespread flood damage across most of Japan during the 1979 ... > more
• Hurricanes and Cyclones
  Severe Weather
  Storms
  Weather
  Geography
  Ecosystems
   
  

  Hurricane Charley

  Hurricane Charley was the third named storm, the second hurricane, and the second major hurricane of the 2004 Atlantic hurricane ... > more

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