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Pyroclastic flow
Pyroclastic flows are a common and devastating result of some volcanic eruptions. They are fast-moving fluidized bodies of hot gas, ash and rock (collectively known as tephra) which can travel away ... > more -
Timeline of Hurricane Katrina
This Wikipedia article contains a detailed historical timeline of the events of Hurricane Katrina. At approximately 8:14 AM CDT (1314 UTC) on Monday August 29, 2005, the New Orleans office of the ... > more -
Shifting cultivation
Shifting cultivation is an agricultural system in which a person uses a piece of land, only to abandon or alter the initial use a short time later. This system often involves clearing of a piece of ... > more -
Mid-Atlantic United States flood of 2006
The Eastern United States flooding of June 2006 is a significant flooding event in much of Mid-Atlantic region of the eastern United States. The flooding was very widespread, affecting numerous ... > more -
March 2006 Tornado Outbreak Sequence
The March 2006 Tornado Outbreak Sequence was an early season and long lasting tornado outbreak sequence in the central United States that started on the morning of March 9 and continued for over four ... > more -
Global Positioning System
The Global Positioning System, usually called GPS, is the Earth's only fully-functional satellite navigation system. A constellation of more than two dozen GPS satellites broadcasts precise timing ... > more -
Genetic code
The genetic code is the set of rules by which information encoded in genetic material (DNA or RNA sequences) is translated into proteins (amino acid sequences) by living cells. Specifically, the code ... > more -
Fossil fuel
Fossil fuels are hydrocarbons, primarily coal, fuel oil or natural gas, formed from the remains of dead plants and animals. In common dialogue, the term fossil fuel also includes ... > more
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