Caving Articles

• Atmosphere
  Ozone Holes
  Air Quality
  Renewable Energy
  Environmental Science
  Geomagnetic Storms
   

  Planetary boundary layer

  The planetary boundary layer (PBL) is also known as the atmospheric boundary layer (ABL). It is the lowest part of the atmosphere and its behavior is directly influenced by its contact with the ... > more
• Acid Rain
  Sports Science
  Heartburn
  Pollution
  Gastrointestinal Problems
  Vitamin B
   
  

  PH

  pH is a measure of the activity of hydrogen ions (H+) in a solution and, therefore, its acidity or alkalinity. Aqueous solutions with pH values lower than 7 are considered acidic, while pH values ... > more
• Oceanography
  Geography
  Global Warming
  Coral Reefs
  Floods
  Geology
   
  

  Geology of the Capitol Reef area

  The exposed geology of the Capitol Reef area presents a record of mostly Mesozoic-aged sedimentation in an area of North America in and around Capitol Reef National Park. Nearly 10,000 feet (3,000 m) ... > more
• Petroleum
  Fossil Fuels
  Energy and the Environment
  Rainforests
  Air Quality
  Chemistry
   
  

  Natural gas

  Natural gas, commonly referred to as gas, is a gaseous fossil fuel consisting primarily of methane. It is found in oil fields and natural gas fields, as well as—in smaller quantities—in ... > more
• Water
  Floods
  Geography
  Oceanography
  Drought Research
  Global Warming
   
  

  River

  A river is a large natural waterway. The source of a river may be a lake, a spring, or a collection of small streams, known as headwaters. From their source, all rivers flow downhill, typically ... > more
• Geology
  Earth Science
  Earthquakes
  Near-Earth Object Impacts
  Natural Disasters
  Environmental Issues
   
  

  Continental crust

  The continental crust is the layer of granitic, sedimentary and metamorphic rocks which form the continents and the areas of shallow seabed close to their shores, known as continental shelves. It is ... > more
• Dinosaurs
  Geography
  Environmental Policy
  Charles Darwin
  Origin of Life
  Paleontology
   

  Jurassic

  The Jurassic period is a major unit of the geologic timescale that extends from about 200 Ma (million years ago) at the end of the Triassic to 146 Ma at the beginning of the Cretaceous. The Jurassic ... > more
• Storms
  Severe Weather
  Snow and Avalanches
  Global Warming
  Climate
  Geomagnetic Storms
   
  

  Winter storm

  A winter storm is a type of precipitation in which the dominant varieties of precipitation are forms that only occur at cold temperatures, such as snow or sleet, or a rainstorm where ground ... > more
• Tundra
  Geography
  Animals
  Mammals
  Endangered Animals
  Fish
   
  

  Arctic fox

  The Arctic fox, also known as the polar fox, is a small fox native to cold Arctic regions of the Northern Hemisphere. It is common in all three tundra biomes. The Arctic fox has evolved to live in ... > more
• Seeds
  Botany
  Nature
  Endangered Plants
  Ecology
  Agriculture and Food
   

  Seedbank

  Seedbanks store seeds as a source for planting in case seed reserves elsewhere should be destroyed. The seeds stored may be various in nature, such as those of food crops or those of rare species, to ... > more

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