Encyclopedia

Earth (chemistry) The chemical term earths was historically applied to certain chemical substances, once thought to be elements, and this name was borrowed from one of the four classical elements of Plato. "Earths" later turned out to be chemical compounds, albeit difficult to decompose, such as rare earths and alkaline earths.
Earth (Noon Universe) In the Noon Universe created by Boris and Arkady Strugatsky Earth is one of the planets populated by humans as well as their assumed origin. It is identical to the modern Earth except for the fact that it is set in the XXII century.
Earth 2140 Earth 2140 is a 2-D real-time strategy computer game created in 1997 by Polish-based Topware Interactive (now Zuxxez Entertainment). Due to lack of publicity and marketing, the game was virtually unknown in the United States as well as Europe.
Earth 2150 Earth 2150 is a real-time strategy game, originally published in 2000 by SSI and the Polish developer Reality Pump and a sequel to the largely unknown Earth 2140. It was one of the first commercial full-3D games of its kind, although Pumpkin Studios' Warzone 2100 was released in the American market prior to Earth 2150.
Earth and Sky Earth and Sky is an interactive fiction trilogy written by Paul O'Brian about the adventures of a brother and sister who gain superpowers while searching for their lost parents. The first part, Earth and Sky was entered in the 2001 annual Interactive Fiction Competition where it finished eighth.
Earth and water According to Herodotus the Persians demanded earth and water () from the cities or people who surrendered to them. On book 4, Herodotus mentions for the first time the term earth and water in the answer of king Idanthyrsos of the Scythians to king Darius.
Earth Alliance (Babylon 5) The Earth Alliance is the name of a fictional alliance of the countries of Earth in the television series Babylon 5. The transition of Earth government from a democratic, post-war government to an authoritarian, militaristic one is a major theme of the show.
Earth Alliance Civil War The Earth Alliance Civil War is an armed conflict in the Babylon 5 series, in which President Clark dissolves the Earth senate and orders martial law throughout the Earth Alliance worlds. It formed a major element of the show in seasons 3 and 4.
Earth Angel "Earth Angel (Will You Be Mine)" was an American pop song, originally released by The Penguins in 1954, as the B-side to "Hey Señorita". It quickly outstripped the A-side in popularity and reached #8 on the Billboard chart.
Earth battery An Earth battery is composed of a pair of electrodes made of two dissimilar metals, such as iron and copper, which are buried in the soil or immersed in the sea. A device that is placed in water is labeled a "sea battery".
Earth cooling tubes Earth cooling tubes or earth warming tubes (also known as ground-coupled heat exchangers) utilize the earth's near constant subterranean temperature to warm or cool air for residential, farm or industrial uses. They are often a viable and economical alternative to conventional heating, cooling or heat pump systems since there are no compressors, chemicals or burners and only blowers are required to move the air.
Earth Collaboratory The Earth Collaboratory is a forthcoming project at the University of Wisconsin that aims to share global environmental information in a highly interactive way. Based on a mix of ideas from wikis and Google Maps, the Earth Collaboratory will distribute state-of-the-art datasets concerning the global environment, and allow individuals to leave detailed comments about conditions where they live.
Earth Crisis Earth Crisis was a straight edge, vegan hardcore band from Syracuse, New York that recorded and performed from 1992 until 2001. Earth Crisis is famous for supporting animal rights (and the Animal Liberation Front) and promoting a healthy life-style including a strict vegan diet and abstinence from alcohol and other stimulant substances.
Earth Day Earth Day is a name used by two different observances held annually in the (northern) spring, both intended to inspire awareness of and appreciation for the Earth's environment. Earth Day is in the public domain and open to all persons to shape.
Earth Day Sunday Earth Day Sunday is a semi-religious holiday that many churches in the United States have begun to celebrate on the Sunday before Earth Day. The day is meant to inspire parishioners to "celebrate and protect God's creation.
Earth Departure Stage The Ares V Earth Departure Stage (EDS) is the high-energy cryogenic upper stage of NASA's proposed new Ares V launch vehicle. Its purpose is to provide propulsion for the Orion spacecraft as part of Project Constellation operations in Earth orbit, near-Earth space, and beyond.
Earth from the Air Earth from the Air is a popular collection of environmental photographs taken from the air by Yann Arthus-Bertrand. They have been published as a book called 365 days: Earth from the air, together with text describing environmental concerns related to the photographs.
Earth governments (Star Trek) In the fictional Star Trek universe, several political organisations take power over part or all of Earth. Most of these Earth governments are only mentioned in passing once or twice, and little is known of their history and policies, or of their rise and fall.
Earth changes The term Earth Changes describes a belief prevalent in certain segments of the New Age movement. Believers in the 'Earth Changes' theory believe that the world will soon enter on a series of catastrophic changes that will begin a major alteration in human life on the planet.
Earth Charter Initiative The Earth Charter Initiative is the collective name for the extraordinarily diverse, global network of people, organizations, and institutions who participate in promoting the Earth Charter, and in implementing its principles in practice. The Initiative is a broad-based, voluntary, civil society effort, but participants include leading international institutions, national government agencies, university associations, NGOs, cities, faith groups, and many well-known leaders in sustainable development.
Earth in the Balance Earth in the Balance: Ecology and the Human Spirit (ISBN 0-452-26935-0, paperback ISBN 1-85383-743-1) is a 1992 book written by Al Gore, published in June 1992, shortly before he was elected Vice President in the 1992 presidential election. Known by the short title Earth in the Balance, the book explains the world's ecological predicament and describes a range of policies to deal with the most pressing problems.
Earth Inferno Earth Inferno is a mixed version of three live performances by Fields of the Nephilim which shares its name with a self-published book by occult artist Austin Osman Spare. The live venues used for the recordings were from the group's 1990 Sumerland tour at Wolverhampton Civic Centre (August 4), Brixton Academy (October 6) and Hamburg Sportshalle (November 6) The record was released in April 1991 by Beggars Banquet Records and peaked at number 39 in UK album charts.
Earth Is Room Enough Earth Is Room Enough is a collection of fifteen short science fiction and fantasy stories and two pieces of comic verse published by Isaac Asimov in 1957. Asimov assembled the stories (all set on Earth) and chose the title as a riposte to at least one critic who had expressed distaste for the Foundation Trilogy, characterising it as an example of Space Opera.
Earth Kingdom The Earth Kingdom is a collective term for a nation of people in the fictional universe of the Nickelodeon animated television series Avatar: The Last Airbender. One of the series' "Four Nations," The Earth Kingdom is a massive continent taking up most of the planet's eastern hemisphere, roughly analogous to Eurasia in our world.
Earth leakage circuit breaker An earth leakage circuit breaker (ELCB) is a device with two earth terminals used to directly detect currents leaking to earth from an installation and cut the power. They were mainly used on TT earthing systems before RCDs became common.
Earth Liberation Front The Earth Liberation Front (ELF) is the collective name for anonymous and autonomous individuals or groups that, according to the now defunct Earth Liberation Front Press Office, use "economic sabotage to stop the exploitation and destruction of the natural environment." The organization has been active in the United States], [[Canada, Greece, and the United Kingdom where the movement was founded.
Earth Liberation Front Press Office The North American Earth Liberation Front Press Office (NAELFPO or ELFPO) was a legal, above-ground news service dedicated to exposing the political and social motives behind the covert direct actions of the underground Earth Liberation Front (ELF). The North American Earth Liberation Front Press Office received anonymous communiques from the ELF and distributed the message to the media and public.
Earth materials Earth materials is a general term that includes rocks and materials that are not by definition rocks but are commonly regarded as rocks. Examples of the latter are coal and volcanic glass, which are not composed of minerals.
Earth mysteries The term Earth Mysteries describes a multi-disciplined (holistic) approach to the study of ancient sites and landscapes (including archaeology, archaeoastronomy, and ley lines), unusual natural objects, bizarre events and phenomena, anomalous archaeological artifacts known as anachronisms (e.g.
Earth orbit rendezvous Earth Orbit Rendezvous was a proposed method for American space missions to the Moon. It consisted of using a series of small rockets half the size of a Saturn V Rocket to put different components of a spacecraft to go to the Moon in orbit around the Earth, then assemble them in orbit.
Earth oven An earth oven or cooking pit, is one of the most simple and long-used cooking structures - a simple pit dug in the ground to hold heated materials for food to be cooked over. Earth ovens have been used in many places and cultures in the past.
Earth Observing System The Earth Observing System (EOS) is a program of NASA comprising a series of artificial satellite missions and scientific instruments in Earth orbit designed for long-term global observations of the land surface, biosphere, atmosphere, and oceans of the Earth. The satellite component of the program was launched in 1997.
Earth pressure balance Earth pressure balance, or EPB, is a mechanised tunneling method in which spoil is admitted into the tunnel boring machine (TBM) via a screw conveyor (cochlea) arrangement which allows the pressure at the face of the TBM to remain balanced without the use of slurry.
Earth Potential Rise Earth Potential Rise (EPR) occurs when a large current flows to earth through an earth grid impedance. The ground potential at the current injection site increases relative to a remote earth, with the potential decreasing with increasing distance from the injection point.
Earth Prime Earth Prime (or Earth-Prime) is a term sometimes used in works of speculative fiction involving parallel universes or a multiverse, and refers either to the universe containing "our" Earth, or to a parallel world with a bare minimum of divergence points from Earth as we know it.
Earth Prime (Sliders) Earth Prime, a term used in the television show Sliders, is the name of the alternate Earth where the four original sliders (Quinn Mallory, Wade Welles, Rembrandt Brown, and Maximillian Arturo) started their journey. Although it is very similar to our Earth, the creator of the show, Tracy Tormé, has stated that it is not our Earth .
Earth radiation Earth radiation is a theoretical geophysical phenomenon described primarily by the German authors Manfred Curry and Ernst Hartmann. They both describe a mystic force field (similar to Odic force, Mana, Qi) that covers the earth at regular intervals and can be detected by dowsing using a divining rod.
Earth radius The radius of Earth (or any other planet) is the distance from its center to a point on its surface at mean sea level. Like most planets, Earth is not a perfect sphere, but instead is somewhat flattened at the North and South Poles, and bulges at the equator, which means that its radius and corresponding radius of curvature differs depending on where you measure it (and, in the case of curvature, even which direction is being faced!
Earth Resistance The Earth Resistance is a fictional rebellion appearing in the 2004 First Person shooter game Half Life 2. The Rebels appear to be modelled after the same kind of Resistance seen in the Terminator movies, and use guerrilla tactics favoured by the Vietnamese forces.
Earth Rights Institute The Earth Rights Institute is a member organization of the International Union for Land Value Taxation, a United Nations NGO based in London and recently, a partner organization for the EcoEarth Alliance, a NGO stakeholder of the UN Commission on Sustainable Development. The Earth Rights Institute was founded in 2000 by Annie Goeke and is a non-profit organization.
Earth science Earth science (also known as geoscience, the geosciences or the Earth Sciences), is an all-embracing term for the sciences related to the planet Earth. It is arguably a special case in planetary science, being the only known life-bearing planet.
Earth shoe Earth shoes were an unconventional style of shoe invented in the 1970s in Scandinavia: unlike other shoes, the soles were thick and the heels were thin (Negative Heel Technology), so wearing them one walked heel-downward. The advertisements said that it was like walking on the beach, where one's footprints are this way.
Earth systems engineering and management Earth systems engineering and management (ESEM) is a discipline used to analyze, design, engineer and manage complex environmental systems. It entails a wide range of subject areas including anthroplogy, engineering, environmental science, ethics and philosophy.
Earth Sphere In the Gundam anime metaseries, the Earth Sphere refers to Earth, the Moon, and all artificial satellites orbiting them. In light of the space colonization prevalent in Gundam, the term essentially encompasses humanity's expanded habitat.
Earth Star Voyager Earth Star Voyager is the name of a science fiction television series shown on the Wonderful World of Walt Disney in 1988. The show aired as a two-part pilot, but was never picked up for a series and has not been released on DVD, although a fanbase for the pilot has grown over the years.
Earth Summit 2002 The World Summit on Sustainable Development, WSSD or Earth Summit 2002 took place in Johannesburg, South Africa, from 26 August to 4 September 2002. It was convened to discuss sustainable development by the United Nations.
Earth terminal An Earth terminal, in a satellite link, is one of the non-orbiting communications stations that receives, processes, and transmits signals between itself and a satellite. Earth terminals may be at mobile, fixed, airborne, or waterborne complexes.
Earth to America (TV special) Earth to America is a 2-hour television special that aired on TBS on November 20, 2005. Hosted by Tom Hanks, the show gave a comedical approach to raise awareness of issues concerning the environment, mostly global warming.
Earth tone Earth tone is a color scheme that draws from a color palette of browns, tans, greys and some reds. The colors in an earth tone scheme are muted and flat in an emulation of the natural colors found in dirt and rocks.
Earth Water Earth Water is a Canadian-owned bottled water company that donates all of their net profits from the sale of Earth Water to the United Nations’ UNHCR. The money raised goes to funding projects related to acquisition, transport, storage, and distribution of fresh clean water, focusing on both emergency provision and developing sustainable water sources for people living in poverty.
Earth X Earth X is the collective name for a trilogy of comic book series published by Marvel Comics and based on Alex Ross's re-imaginings of a dystopian future for the Marvel Universe. It was one of Marvel's best-selling projects in recent years.
Earth's atmosphere (Meteorology) Earth's atmosphere (and its mechanics) can often be described in meteorology with very particular and specific terms. While meteorologists do use the more commonly understood standard terms for the earths atmospheric layers, these definitions are insufficient to describe most weather systems, as most weather tends to occur in the lower layers of the earth's atmosphere (most often the troposphere).
Earth's energy budget The Earth can be considered as a physical system with an energy budget that includes all gains of incoming energy and all losses of outgoing energy. The planet is approximately in equilibrium, so the sum of the gains should be approximately equal to the sum of the losses.
Earth's magnetic field Earth's magnetic field (and the surface magnetic field) is approximately a magnetic dipole, with one pole near the north pole and the other near the geographic south pole. An imaginary line joining the magnetic poles would be inclined by approximately 11.
Earth-1121 In the Marvel Comics multiverse, Earth-1121 or Earth 1121 is, according to the Official Handbook to the Marvel Universe: Alternate Worlds 2005, the designation used to identify a continuity similar to Earth-712, home of the Squadron Supreme. In the Earth X sequel miniseries Paradise X: Heralds, a counterpart of Hyperion was recruited to X-51's cross-timeline team of Heralds.
Earth-120185 Earth-120185 is one universe in the fictional Marvel Comics Multiverse, and the home of the Transformers as chronicled in the Marvel UK comics series. In this universe, the Transformers landed on Earth some four million years ago, awakened in 1984, and continued their struggles on Earth.
Earth-712 In the Marvel Comics Multiverse, Earth-712 or Earth-S is the designation used to identify the continuity in which the Squadron Supreme operate. This world has a similar history, but many of the place-names of cities and states are different from that of the real world, and this reality has far fewer superhuman beings than Earth 616, the mainstream Marvel Universe.
Earth-98 In the Marvel Comics Multiverse, Earth-98 or Earth 98 is similar to Earth-616 which is a primary home to superheroes seen in canonical Marvel comic books except that they began their careers during their debuts on the comic book with a publication date rather than beginning their career "ten to fifteen years ago" (eg. Spider-Man began his adventures in 1962 instead of 199?
Earth-98125 In the Marvel Comics Multiverse, Earth-98125 or Earth 98125 is the designation used to identify the continuity in which Brian Braddock, unlike in Earth-616, chose both the Amulet of Life and Sword of Death and was transformed into Captain Britain, at which point the continuity diverged.
Earth-crossing asteroid An Earth-Crossing Asteroid (ECA), is an asteroid that is capable of coming very near to the Earth at any point in the future. This is not to be confused with an Earth-crosser asteroid, which has an aphelion greater than Earth's aphelion, and a perihelion less than the Earth's perihelion.
Earth-maker myth An elaborate Earth-Maker Story of Creation is a myth that comes from the Native Americans of California, also called the "Story of Creation." This myth describes Earth-maker creating day and night, land, water, and all living things.
Earth-Minbari War The Earth-Minbari War is a fictional war that formed part of the back story of the science fiction television series, Babylon 5. The war ended with Earth on the brink of destruction only to have the other side improbably surrender to the all but defeated planet at the last moment.
Earth-Romulan War In the Star Trek fictional universe, the Earth-Romulan War was a major conflict fought between the United Earth and the Romulan Star Empire in the 22nd century. It is credited as leading to the formation of the United Federation of Planets.
Eartha Eartha is the world's largest rotating globe (excluding the Earth itself), located within the headquarters of the DeLorme mapping corporation in Yarmouth, Maine. The globe weighs approximately 5,600 pounds (2,500 kg), and has a diameter of over 41 feet (12.
Earthbag construction Earthbag construction is a very strong, very cheap way of creating structures. It is an alternative-building technique that has evolved from historic military bunker construction techniques and temporary flood-control dike building methods.
Earthbender Earthbender is a collective term for an order of people in the fictional universe of the Nickelodeon animated television series Avatar: The Last Airbender. A moiety of the Earth Kingdom, they are heirs to the mystical martial art of earthbending, the geokinetic ability to control earth.
Earthbound (King Crimson album) Earthbound is a live album by the band King Crimson, released in 1972 as a budget record shortly after the line-up which recorded it had broken up. It has been praised for its funky grooves (unusual for the band), and a blistering performance of "21st Century Schizoid Man", but widely criticized for its very poor sound quality, due to it being recorded onto cassette by live sound engineer Hunter MacDonald.
EarthBound (series) EarthBound (Mother in Japan) is a role-playing game series created by Shigesato Itoi for Nintendo. The series started in 1989 with Mother for the Famicom/NES, and was then followed up by a sequel, Mother 2 (known as EarthBound in America) for the Super Famicom/Super NES system, and followed up again much later with Mother 3 for the Game Boy Advance in 2006.
EarthBound 64 Earthbound 64 (Japanese: Mother 3) was a cancelled game that was going to be released for the Nintendo 64 and then on the Nintendo 64DD. Several years later it was revealed that the project had started up again for the Game Boy Advance under the form of Mother 3.
Earthcore Earthcore is Australia's largest and longest running outdoor dance music festival and electronic music events organisation. For twelve years Earthcore has hosted over 200 events ranging from massive seven-day outdoor festivals, weekly club nights, warehouse parties, one off large scale club raves, events on boats and even moving trains.
EarthCraft House EarthCraft House is a green building program created in 1999 as a partnership between the Greater Atlanta Home Builders Association and Southface Energy Institute that teaches builders the latest methods of resource and energy-efficient construction. of the requirements for air sealing the home, EarthCraft homes are more energy efficient than conventional homes.
Earthdawn Earthdawn is a fantasy role-playing game, originally produced by FASA. It has since been licensed to Living Room Games, which is producing the Second Edition line, and RedBrick Limited, a company that is producing the Classic line (which is essentially an alternate second edition; see History below for more information).
Earthdive Earthdive is a global project of divers, snorkellers and ordinary citizens to protect the ocean ecosystem. It maintains Global Dive Log - a unique database developed in partnership with the United Nations Environment Programme World Conservation Monitoring Centre (UNEP-WCMC), Coral Cay Conservation (CCC) and marine biologists from all over the world.
Earthdog trial An earthdog trial tests Dachshunds and small terriers for their working abilities and instinct. Earthdog den trials involve underground tunnels that dogs must negotiate, whilst scenting a rat, the “quarry”.
EarthDesk EarthDesk is a software application for Microsoft Windows and Mac OS X that changes the computer user’s desktop image to a constantly updating view of Earth. The software can be set to update daylight and moonlight coverage on the map, as well as live cloud images which are superimposed onto the map.
Earthen dam An Earthen dam, or earth-fill dam, is a dam constructed as a simple embankment of well-compacted earth, sometimes with a watertight concrete or clay core or upstream face, or sometimes with a hydraulic fill to produce a watertight core. A type of temporary earth dam occasionally used in high latitudes is the frozen-core dam, in which a coolant is circulated through pipes inside the dam to maintain a watertight region of permafrost within it.
Earthen floor An earthen floor is a floor made of dirt, raw earth, or other unworked ground materials. It is usually constructed, in modern times, with a mixture of sand,finely chopped straw and clay, mixed to a thickened consistency and spread with a trowel on a sub-surface such as concrete.
Earthen manure storage Earthen manure storages are engineered structures used for the storage of liquid livestock manure. Generally these structure are designed so that about fifty percent of the structure is below existing grade and fifty percent is above.
Earthing system In electricity supply systems, an earthing system defines the electrical potential of the conductors relative to that of the Earth's conductive surface. The choice of earthing system has implications for the safety and electromagnetic compatibility of the power supply.
Earthjustice Earthjustice is a non-profit public interest law firm that specializes in pro-environmental litigation. It was founded in 1971, under the name "Sierra Club Legal Defense Fund," by two volunteer lawyers working with the Sierra Club, Don Harris and Fred Fisher.
Earthlife Africa Earthlife Africa is a South African environmental organization founded in August 1988, in Johannesburg. Initially conceived of as a South African version of Greenpeace, the group began by playing a radical, anti-apartheid, activist role, while now arguably is more of a reformise lobby or pressure group.
Earthlings (documentary) Earthlings is a 2005 multi-award winning documentary written, produced and directed by Shaun Monson and co-produced by Persia White. The film was narrated by Hollywood actor and animal rights activist Joaquin Phoenix.
Earthmen Earthmen are inhabitants of the Narnian realm of Underland who originate from Bism. According to a description in The Silver Chair they are gnomes who range in height from one to seven feet tall and have a variety of facial types.
Earthquake An earthquake is a phenomenon that results from the sudden release of stored energy in the Earth's crust that creates seismic waves. At the Earth's surface, earthquakes may manifest themselves by a shaking or displacement of the ground and sometimes tsunamis, which may lead to loss of life and destruction of property.
Earthquake (film) Earthquake is a 1974 disaster film that was among several box-office successful disaster films of the 1970s that places a recognizable all-star cast in life and death situations. The basic plot concerns the reactions and struggles for survival after a catastrophic earthquake hits the city of Los Angeles, California.
Earthquake Baroque Earthquake Baroque is a style of Baroque architecture found in places, such at the Philippines and Guatemala, which suffered earthquakes during the 17th century and 18th century and where large public buildings, such as churches were rebuilt in a Baroque style. Similar events lead to the Pombaline architecture in Lisbon following the 1755 Lisbon earthquake and Sicilian Baroque in Sicily following the earthquake in 1693.
Earthquake hazard zoning of India The Indian subcontinent had a long history of devastating earthquakes. The major reason for the high frequency and intensity of the earthquakes is that India continues to drive into Asia at a rate of approximately 47 mm/year.
Earthquake insurance Earthquake insurance is a form of property insurance that pays the policyholder in the event of an earthquake that causes damage to the property. Most ordinary homeowners insurance policies do not cover earthquake damage.
Earthquake light A earthquake light is a bizarre, luminous aerial phenomenon, similar in appearance to the aurora borealis, that appears in the sky at or near areas of tectonic stress, seismic activity or volcanic eruptions. They are especially visible at night.
Earthquake liquefaction Earthquake liquefaction, often referred to simply as liquefaction, is the process by which saturated, non-cohesive soil (sand and silt) loses shear strength during seismic shaking and behaves like a liquid, rather a solid. The effect on structures and buildings can be devastating, and is a major contributor to urban seismic risk.
Earthquake location The primary purpose of a seismometer is to locate the initiating points of earthquake hypocenters. The secondary purpose, of determining the 'size' or Moment magnitude scale must be calculated after the precise location is known.
Earthquake prediction An earthquake prediction is a prediction that an earthquake in a specific magnitude range will occur in a specific region and time window. Seismologists are not currently able to predict earthquakes with such accuracy, though the early results of the Demeter satellite suggest that this could become possible (In French.
Earthquake preparedness Earthquake preparedness refers to a variety of measures designed to help individuals, businesses, and local and state governments in earthquake prone areas to prepare for significant earthquakes. Preparedness measures are part of the emergency management cycle, and can be refined through the use of a good Earthquake scenario.
Earthquake scenario An Earthquake scenario is a planning tool to determine the correct emergency responses, and to outline possible high-risk areas. It uses the basics of seismic hazard studies, but usually places a set earthquake on a specific fault, most likely near a high-population area.
Earthquake storm An earthquake storm is a recently proposed theory about earthquakes where an earthquake can trigger a series of other large earthquakes within the same tectonic plate as the stress transfers along the fault. This is similar to the idea of aftershocks, except they take place years apart.
Earthquake swarm Earthquake swarms are sequences of nearby earthquakes striking in a short period of time. They are differentiated from earthquakes succeed by a series of aftershocks by the observation that no single earthquake in the sequence is obviously the mainshock.
Earthquake Valve An earthquake valve or seismic valve is an automatic way to shut off the low pressure regulated gas supply to a structure during a major earthquake and/or if a pipe is broken. These are applicable both to utility supplied natural gas and to gaseous liquified petroleum gas (LPG).
Earthquake Visions Earthquake Visions is the name of the album that the glam-style metal band It's Alive recorded for Cheiron Studios in 1994. The album was originally pressed in 1000 copies and later on given away as a free cover tape in the UK by the Metal Forces magazine.
Earthquake warning system An earthquake warning system is a system of accelerometers, communication, computers, and alarms that is devised for regional notification of a substantial earthquake while it is in progress. This is not the same as earthquake prediction (not producing actionable event warnings at present).
Earthscope The EarthScope project is an undertaking funded by the National Science Foundation in partnership with the USGS and NASA to characterize the geology of North America. EarthScope is composed of three projects: USARRAY, the Plate Boundary Observatory PBO and the San Andreas Fault Observatory at Depth SAFOD.

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