Near-Earth Object Impact Articles

• Forest
  Rainforests
  Trees
  Ecology Research
  Nature
  Wildfires
   
  

  Forest

  A forest is an area with a high density of trees (or, historically, a wooded area set aside for hunting). These plant communities cover large areas of the globe and function as animal habitats, ... > more
• Global Warming
  Environmental Issues
  Climate
  Environmental Policy
  Nature
  Air Quality
   
  

  Greenhouse gas

  Greenhouse gases are components of the atmosphere that contribute to the greenhouse effect. Some greenhouse gases occur naturally in the atmosphere, while others result from human activities such as ... > more
• Weather
  Severe Weather
  Geomagnetic Storms
  Hurricanes and Cyclones
  Storms
  Global Warming
   
  

  Weather

  Weather is a term that encompasses phenomena in the atmosphere of a planet. The term is normally taken to mean the activity of these phenomena over short periods of time, usually no more than a few ... > more
• Volcanoes
  Geology
  Sports Science
  Natural Disasters
  Geography
  Nature of Water
   
  

  Igneous rock

  Igneous rocks are formed when molten rock (magma) cools and solidifies, with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive ... > more
• 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
• Ozone Holes
  Environmental Issues
  Atmosphere
  Air Quality
  Air Pollution
  Pollution
   
  

  Ozone layer

  The ozone layer is the part of the Earth's atmosphere which contains relatively high concentrations of ozone (O3). "Relatively high" means a few parts per million - much higher than the ... > more
• Marine Biology
  Ecology
  Fish
  Ecology Research
  Sea Life
  Oceanography
   
  

  Plankton

  Plankton are drifting organisms that inhabit the water column of oceans, seas, and bodies of fresh water. Plankton abundance and distribution are strongly dependent on factors such as ambient ... > more
• Hurricanes and Cyclones
  Severe Weather
  Storms
  Rainforests
  Geomagnetic Storms
  Earth Science
   
  

  Cyclone Mala

  Cyclone Mala, also known as Very Severe Cyclonic Storm Mala, was the strongest tropical cyclone of the 2006 North Indian cyclone ... > more
• Natural Disasters
  Severe Weather
  Floods
  Earthquakes
  Hurricanes and Cyclones
  Tsunamis
   

  Catastrophe modeling

  Catastrophe modeling (also known as cat modeling) is the process of using computer-assisted calculations to estimate the losses that could be sustained by a portfolio of properties due to a ... > more
• Energy and the Environment
  Renewable Energy
  Environmental Science
  Fuel Cells
  Sustainability
  Alternative Fuels
   
  

  Liquid nitrogen economy

  A liquid nitrogen economy is a hypothetical proposal for a future economy in which the primary form of energy storage and transport is liquid nitrogen. It is proposed as an alternative to liquid ... > more

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