Air Quality Articles

• 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
• Energy and the Environment
  Renewable Energy
  Petroleum
  Energy and Resources
  Environmental Science
  Oil Spills
   
  

  Biodiesel

  Biodiesel refers to a diesel-equivalent, processed fuel derived from biological sources. Though derived from biological sources, it is a processed fuel that can be readily used in diesel-engined ... > more
• Infant's Health
  Agriculture and Food
  Food and Agriculture
  Organic
  Sports Medicine
  Healthy Aging
   
  

  Pesticide

  The Environmental Protection Agency (EPA or USEPA) defines a pesticide as "any substance or mixture of substances intended for preventing, destroying, repelling, or mitigating any pest". A pesticide ... > more
• Severe Weather
  Storms
  Tornadoes
  Weather
  Geography
  Water
   
  

  Supercell

  A supercell is a severe thunderstorm with a deep rotating updraft. Supercell thunderstorms are the largest, most severe class of single-cell thunderstorms. It has been argued that there are really ... > more
• Botany
  Nature
  Global Warming
  Air Quality
  Geochemistry
  Endangered Plants
   
  

  Photosynthesis

  Photosynthesis, generally, is the synthesis of sugar from light, carbon dioxide and water, with oxygen as a waste product. It is arguably the most important biochemical pathway known; nearly all life ... > more
• Global Warming
  Forest
  Air Quality
  Climate
  Rainforests
  Geochemistry
   
  

  Carbon dioxide sink

  A carbon dioxide (CO2) sink is a carbon reservoir that is increasing in size, and is the opposite of a carbon "source". The main natural sinks are the oceans and plants and other organisms that use ... > more
• Nature
  Sustainability
  Ecology
  Biodiversity
  Environmental Policy
  Endangered Plants
   
  

  Conservation ethic

  The conservation ethic is an ethic of resource use, allocation, exploitation, and protection. Its primary focus is upon maintaining the health of the natural world: its forests, fisheries, habitats, ... > more
• Geology
  Nature of Water
  Energy and Resources
  Sports Science
  Atmosphere
  Floods
   
  

  Sedimentary rock

  Sedimentary rock is one of the three main rock groups (along with igneous and metamorphic rocks) and is formed in four main ways: by the deposition of the weathered remains of other rocks (known as ... > 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
• Agriculture and Food
  Organic
  Food and Agriculture
  Sustainability
  Soil Types
  Food
   
  

  Organic farming

  Organic farming is a form of agriculture that relies on ecosystem management and attempts to reduce or eliminate external agricultural inputs, especially synthetic ones. It is a holistic production ... > more

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