Search This Blog

Thursday, October 13, 2022

Google Earth

From Wikipedia, the free encyclopedia
 
Google Earth
Original author(s)Keyhole, Inc.
Developer(s)Google
Initial releaseJune 10, 2001; 21 years ago
Stable release
  • macOS
    7.3.4.8642 (May 12, 2022; 5 months ago) [±]
  • Windows
    7.3.4.8642 (May 22, 2022; 4 months ago) [±]
  • Linux
    7.3.4.8738 (July 22, 2022; 2 months ago) [±]
  • Google Chrome
    9.159.0.0  [±]
  • Android
    9.155.0.2 (February 14, 2022; 7 months ago) [±]
  • iOS
    9.154 (January 19, 2022; 8 months ago) [±]
Preview releaseWindows, macOS, Linux
7.3.3 (April 20, 2020; 2 years ago) [±]
Written inC++
Operating systemWeb App, Windows, macOS, Linux, Android 5.0 +, iOS 12.2 +
Available inVarious languages
TypeVirtual globe
LicenseFreeware
Websitegoogle.com/earth

Google Earth is a computer program that renders a 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles. Users can explore the globe by entering addresses and coordinates, or by using a keyboard or mouse. The program can also be downloaded on a smartphone or tablet, using a touch screen or stylus to navigate. Users may use the program to add their own data using Keyhole Markup Language and upload them through various sources, such as forums or blogs. Google Earth is able to show various kinds of images overlaid on the surface of the earth and is also a Web Map Service client. In 2019, Google has revealed that Google Earth now covers more than 97 percent of the world, and has captured 10 million miles of Street View imagery.

In addition to Earth navigation, Google Earth provides a series of other tools through the desktop application, including a measure distance tool. Additional globes for the Moon and Mars are available, as well as a tool for viewing the night sky. A flight simulator game is also included. Other features allow users to view photos from various places uploaded to Panoramio, information provided by Wikipedia on some locations, and Street View imagery. The web-based version of Google Earth also includes Voyager, a feature that periodically adds in-program tours, often presented by scientists and documentarians.

Google Earth has been viewed by some as a threat to privacy and national security, leading to the program being banned in multiple countries. Some countries have requested that certain areas be obscured in Google's satellite images, usually areas containing military facilities.

History

The core technology behind Google Earth was originally developed at Intrinsic Graphics in the late 1990s. At the time, the company was developing 3D gaming software libraries. As a demo of their 3D software, they created a spinning globe that could be zoomed into, similar to the Powers of Ten film. The demo was popular, but the board of Intrinsic wanted to remain focused on gaming, so in 1999, they created Keyhole, Inc., headed by John Hanke. Keyhole then developed a way to stream large databases of mapping data over the internet to client software, a key part of the technology, and acquired patchworks of mapping data from governments and other sources. The product, called "Keyhole EarthViewer", was sold on CDs for use in fields such as real estate, urban planning, defense, and intelligence; users paid a yearly fee for the service. Despite making a number of capital deals with Nvidia and Sony, the small company was struggling to pay and retain employees.

Fortunes for the company changed in early 2003 during the 2003 invasion of Iraq, when Dave Lorenzini (Director at Keyhole) enticed CNN, ABC, CBS and other major news networks to use their sophisticated 3D flyby imagery to illustrate Baghdad Activities, in exchange for on-air attribution. During the invasion, It was used extensively by Miles O'Brien and other on-air broadcasters, allowing CNN and millions of viewers to follow the progress of the war in a way that had never been seen before. Public interest in the software exploded and Keyhole servers were not able to keep up with demand. Keyhole was soon contacted by the Central Intelligence Agency's venture capital firm, In-Q-Tel, and the National Geospatial-Intelligence Agency, for use with defense mapping databases, which gave Keyhole a much-needed cash infusion. Intrinsic Graphics was sold in 2003 to Vicarious Visions after its gaming libraries did not sell well, and its core group of engineers and management including Brian McClendon and Michael Jones transitioned to Keyhole with Hanke remaining at the head.

At the time, Google was finding that over 25% of its searches were of a geospatial character, including searches for maps and directions. In October 2004, Google acquired Keyhole as part of a strategy to better serve its users.

In 2021 Google replaced its layers feature with a new one on its Google Earth software. This replacement consolidated some layers, but also removed some layers and features.

Imagery

Google Earth's imagery is displayed on a digital globe, which displays the planet's surface using a single composited image from a far distance. After zooming in far enough, the imagery transitions into different imagery of the same area with finer detail, which varies in date and time from one area to the next. The imagery is retrieved from satellites or aircraft. Before the launch of NASA and the USGS's Landsat 8 satellite, Google relied partially on imagery from Landsat 7, which suffered from a hardware malfunction that left diagonal gaps in images. In 2013, Google used datamining to remedy the issue, providing what was described as a successor to the Blue Marble image of Earth, with a single large image of the entire planet. This was achieved by combining multiple sets of imagery taken from Landsat 7 to eliminate clouds and diagonal gaps, creating a single "mosaic" image. Google now uses a myriad of sources to provide imagery in a higher quality and with greater frequency. Imagery is hosted on Google's servers, which are contacted by the application when opened, requiring an Internet connection.

Imagery resolution ranges from 15 meters of resolution to 15 centimeters. For much of the Earth, Google Earth uses digital elevation model data collected by NASA's Shuttle Radar Topography Mission. This creates the impression of three-dimensional terrain, even where the imagery is only two-dimensional.

Google asserts that every image created from Google Earth using satellite data provided by Google Earth is a copyrighted map. Any derivative from Google Earth is made from data on which Google claims copyright under United States Copyright Law. Google grants licenses in this data allowing, among other things, non-commercial personal use of the images (e.g., on a personal website or blog) as long as copyrights and attributions are preserved. By contrast, images created with NASA's globe software WorldWind use The Blue Marble, Landsat, or USGS imagery, each of which is in the public domain.

In version 5.0, Google introduced Historical Imagery, allowing users to view earlier imagery. Clicking the clock icon in the toolbar opens a time slider, which marks the time of available imagery from the past. This feature allows for observation of an area's changes over time. Utilizing the timelapse feature allows for the ability to view a zoomable video as far back as 32 years.

3D imagery

Countries with 3D coverage in Google Earth as of May 2022:
  Countries with 3D coverage (50, including Hong Kong and Macau)
  Countries with former 3D coverage
  Countries without 3D coverage
 
3D imagery in the iOS version of Google Earth, seen here at Wisconsin Dells, Wisconsin

Google Earth shows 3D building models in some cities, including photorealistic 3D imagery made using photogrammetry. The first 3D buildings in Google Earth were created using 3D modeling applications such as SketchUp and, beginning in 2009, Building Maker, and were uploaded to Google Earth via the 3D Warehouse. In June 2012, Google announced that it would be replacing user-generated 3D buildings with an auto-generated 3D mesh. This would be phased in, starting with select larger cities, with the notable exception of cities such as London and Toronto which required more time to process detailed imagery of their vast number of buildings. The reason given is to have greater uniformity in 3D buildings and to compete with Nokia Here and Apple Maps, which were already using this technology. The coverage began that year in 21 cities in four countries. By early 2016, 3D imagery had been expanded to hundreds of cities in over 40 countries, including every U.S. state and encompassing every continent except Antarctica.

In 2009, in a collaboration between Google and the Museo del Prado in Madrid, the museum selected 14 of its paintings to be photographed and displayed at the resolution of 14,000 megapixels inside the 3D version of the Prado in Google Earth and Google Maps.

Street View

On April 15, 2008, with version 4.3, Google fully integrated Street View into Google Earth. Street View displays 360° panoramic street-level photos of select cities and their surroundings. The photos were taken by cameras mounted on automobiles, can be viewed at different scales and from many angles, and are navigable by arrow icons imposed on them.

Using the Street View on Google Earth, users can visit and explore 30 UNESCO World Heritage Sites with historical context and pins for each. The sites include the Great Pyramid, the Taj Mahal, Sagrada Família, the Dolomites, the Royal Botanic Gardens, Kew, and the Great Sphinx.

In 2019, Walt Disney World partnered with Google to create Pixar Street View. A unique activation that enabled viewers to search for hidden Pixar Easter eggs in Toy Story Land at Disney's Hollywood Studios through street view. This creative collaboration elevated Pixar's iconic tradition of hiding Easter eggs in films and introduced it to an immersive new platform.

Water and ocean

Introduced in Google Earth 5.0 in 2009, the Google Ocean feature allows users to zoom below the surface of the ocean and view the 3D bathymetry. Supporting over 20 content layers, it contains information from leading scientists and oceanographers. On April 14, 2009, Google added bathymetric data for the Great Lakes.

In June 2011, Google increased the resolution of some deep ocean floor areas from 1-kilometer grids to 100 meters. The high-resolution features were developed by oceanographers at Columbia University's Lamont–Doherty Earth Observatory from scientific data collected on research cruises. The sharper focus is available for about 5 percent of the oceans. This can be seen in the Hudson off New York City, the Wini Seamount near Hawaii, and the Mendocino Ridge off the U.S. Pacific coast.

Outer space

A picture of Martian landscape
 
Google Earth in Sky Viewing Mode
 
Apollo 11 Lunar Module Eagle and Tranquility Base as portrayed in Google Moon

Google has programs and features, including within Google Earth, allowing exploration of Mars, the Moon, the view of the sky from Earth and outer space, including the surfaces of various objects in the Solar System.

Google Sky

Google Sky is a feature that was introduced in Google Earth 4.2 on August 22, 2007, in a browser-based application on March 13, 2008, and to Android smartphones, with augmented reality features. Google Sky allows users to view stars and other celestial bodies. It was produced by Google through a partnership with the Space Telescope Science Institute (STScI) in Baltimore, the science operations center for the Hubble Space Telescope. Dr. Alberto Conti and his co-developer Dr. Carol Christian of STScI planned to add the public images from 2007, as well as color images of all of the archived data from Hubble's Advanced Camera for Surveys. Then-newly released Hubble pictures were added to the Google Sky program as soon as they were issued.

New features such as multi-wavelength data, positions of major satellites and their orbits as well as educational resources are provided to the Google Earth community and also through Christian and Conti's website for Sky. Also visible on Sky mode are constellations, stars, galaxies, and animations depicting the planets in their orbits. A real-time Google Sky mashup of recent astronomical transients, using the VOEvent protocol, is provided by the VOEventNet collaboration. Other programs similar to Google Sky include Microsoft WorldWide Telescope and Stellarium.

Google Mars

Google Mars is an application within Google Earth that is a version of the program for imagery of the planet Mars. Google also operates a browser-based version, although the maps are of a much higher resolution within Google Earth, and include 3D terrain, as well as infrared imagery and elevation data. There are also some extremely high-resolution images from the Mars Reconnaissance Orbiter's HiRISE camera that are of a similar resolution to those of the cities on Earth. Finally, there are many high-resolution panoramic images from various Mars landers, such as the Mars Exploration Rovers, Spirit and Opportunity, that can be viewed in a similar way to Google Street View.

Mars also has a small application found near the face on Mars. It is called Meliza, a robot character the user can speak with.

Google Moon

Originally a browser application, Google Moon is a feature that allows exploration of the Moon. Google brought the feature to Google Earth for the 40th anniversary of the Apollo 11 mission on July 20, 2009. It was announced and demonstrated to a group of invited guests by Google along with Buzz Aldrin at the Newseum in Washington, D.C. Google Moon includes several tours, including one for the Apollo missions, incorporating maps, videos, and Street View-style panoramas, all provided by NASA.

Other features

Google Earth has numerous features that allow the user to learn about specific places. These are called "layers", and include different forms of media, including photo and video. Some layers include tours, which guide the user between specific places in a set order. Layers are created using the Keyhole Markup Language, or KML, which users can also use to create customized layers. Locations can be marked with placemarks and organized in folders; For example, a user can use placemarks to list interesting landmarks around the globe, then provide a description with photos and videos, which can be viewed by clicking on the placemarks while viewing the new layer in the application.

In December 2006, Google Earth added a new integration with Wikipedia and Panoramio. For the Wikipedia layer, entries are scraped for coordinates via the Coord templates. There is also a community layer from the project Wikipedia-World. More coordinates are used, different types are in the display, and different languages are supported than the built-in Wikipedia layer. The Panoramio layer features pictures uploaded by Panoramio users, placed in Google Earth based on user-provided location data. In addition to flat images, Google Earth also includes a layer for user-submitted panoramic photos, navigable in a similar way to Street View.

Google Earth includes multiple features that allow the user to monitor current events. In 2007, Google began offering users the ability to monitor traffic data provided by Google Traffic in real-time, based on information crowdsourced from the GPS-identified locations of cell phone users.

Flight simulators

Downtown Toronto as seen from an F-16 Fighting Falcon during a simulated flight

In Google Earth 4.2, a flight simulator was added to the application. It was originally a hidden feature when introduced in 2007, but starting with 4.3, it was given a labeled option in the menu. In addition to keyboard control, the simulator can be controlled with a mouse or joystick. The simulator also runs with animation, allowing objects such as planes to animate while on the simulator.

Another flight simulator, GeoFS, was created under the name GEFS-Online using the Google Earth Plug-in API to operate within a web browser. As of September 1, 2015, the program now uses the open-source program CesiumJS, due to the Google Earth Plug-in being discontinued.

Liquid Galaxy

Liquid Galaxy is a cluster of computers running Google Earth creating an immersive experience. On September 30, 2010, Google made the configuration and schematics for their rigs public, placing code and setup guides on the Liquid Galaxy wiki. Liquid Galaxy has also been used as a panoramic photo viewer using KRpano, as well as a Google Street View viewer using Peruse-a-Rue Peruse-a-Rue is a method for synchronizing multiple Maps API clients.

Versions

Google Earth has been released on macOS, Linux, iOS, and Android. The Linux version began with the version 4 beta of Google Earth, as a native port using the Qt toolkit. The Free Software Foundation consider the development of a free compatible client for Google Earth to be a High Priority Free Software Project. Google Earth was released for Android on February 22, 2010, and on iOS on October 27, 2008. The mobile versions of Google Earth can make use of multi-touch interfaces to move on the globe, zoom or rotate the view, and allow to select the current location. An automotive version of Google Earth was made available in the 2010 Audi A8. On February 27, 2020, Google opened up its web-based version of Earth to browsers like Firefox, Edge, and Opera.

Version history
Version Release date Changes
1.0 June 10, 2001
1.4 January 2002
1.6 February 2003
1.7.2 October 2003
2.2 August 2004
3.0 June 2005
  • The first version was released after Google acquired Keyhole, Inc.
4.0 June 2006
4.1 May 2007
4.2 August 2007
  • Google Sky was introduced
  • A flight simulator was added
4.3 April 2008
  • First release to implement KML version 2.2
  • Google Street View was added
5.0 May 2009
  • Google Ocean was introduced
  • Historical Imagery was introduced
5.1 November 2009
5.2 July 2010
  • Last version to support Mac OS X 10.4 Tiger (PPC & Intel) and 10.5 Leopard (PPC)
6.0 March 2011
  • 3D Trees were added
6.1 October 2011
6.2 April 2012
  • Last version to support Mac OS X 10.5 Leopard (Intel)
7.0 December 2012
  • Support for 3D Imagery data was introduced
  • Tour Guide was introduced
7.1 April 2013
  • Last version to support Mac OS X 10.6 Snow Leopard and Mac OS X 10.7 Lion
7.3 July 2017
  • Google Earth Pro became the standard version of the desktop program. (A free license key was also publicly provided by Google for all the earlier Pro versions.)
9.0 April 2017
  • An entirely redesigned version of the program; Currently only available for Google Chrome and Android. The desktop application continues to be Google Earth Pro, with infrequent updates.

Google Earth Pro

Google Earth running on Android

Google Earth Pro was originally the business-oriented upgrade to Google Earth, with features such as a movie maker and data importer. Up until late January 2015, it was available for $399/year, though Google decided to make it free to the public. Google Earth Pro is currently the standard version of the Google Earth desktop application as of version 7.3. The Pro version includes add-on software for movie making, advanced printing, and precise measurements, and is currently available for Windows, Mac OS X 10.8 or later, and Linux.

Google Earth Plus

Discontinued in December 2008, Google Earth Plus was a paid subscription upgrade to Google Earth that provided customers with the following features, most of which have become available in the free Google Earth. One such feature was GPS integration, which allowed users to read tracks and waypoints from a GPS device. A variety of third-party applications have been created which provide this functionality using the basic version of Google Earth by generating KML or KMZ files based on user-specified or user-recorded waypoints.

Google Earth Enterprise

Google Earth Enterprise is designed for use by organizations whose businesses could take advantage of the program's capabilities, for example by having a globe that holds company data available for anyone in that company. As of March 20, 2015, Google has retired the Google Earth Enterprise product, with support ended on March 22, 2017. Google Earth Enterprise allowed developers to create maps and 3D globes for private use, and host them through the platform. GEE Fusion, GEE Server, and GEE Portable Server source code was published on GitHub under the Apache2 license in March 2017.

Google Earth Studio

Google Earth Studio is a web-based version of Google Earth used for animations using Google Earth's 3D imagery. As of June 2021, it is preview-only and requires signing up to use it. It features keyframe animation, presets called "Quick-Start Projects", and 3D camera export.

Google Earth 9

Google Earth 9 is a version of Google Earth first released on April 18, 2017, having been in development for two years. The main feature of this version was the launching of a new web version of Google Earth. This version added the "Voyager" feature, whereby users can view a portal page containing guided tours led by scientists and documentarians. The version also added an "I'm Feeling Lucky" button, represented by a die, which takes the user to a random location on Earth along with showing them a "Knowledge Card" containing a short excerpt from the location's Wikipedia article.

Google Earth Plug-in

The Google Earth API was a free beta service, allowing users to place a version of Google Earth into web pages. The API enabled sophisticated 3D map applications to be built. At its unveiling at Google's 2008 I/O developer conference, the company showcased potential applications such as a game where the player controlled a milktruck atop a Google Earth surface. The Google Earth API has been deprecated as of December 15, 2014 and remained supported until December 15, 2015. Google Chrome ended support for the Netscape Plugin API (which the Google Earth API relies on) by the end of 2016.

Google Earth VR

On November 16, 2016, Google released a virtual reality version of Google Earth for Valve's Steam computer gaming platform. Google Earth VR allows users to navigate using VR controllers, and is currently compatible with the Oculus Rift and HTC Vive virtual reality headsets. On September 14, 2017, as part of Google Earth VR's 1.4 update, Google added Street View support.

Google Earth Outreach

Google Earth Outreach is a charity program, through which Google promotes and donates to various non-profit organizations. Beginning in 2007, donations are often accompanied by layers featured in Google Earth, allowing users to view a non-profit's projects and goals by navigating to certain related locations. Google Earth Outreach offers online training on using Google Earth and Google Maps for public education on issues affecting local regions or the entire globe. In June 2008, training was given to 20 indigenous tribes in the Amazon rainforest, such as the Suruí, to help them preserve their culture and raise awareness for the problem of deforestation.

Non-profit organizations featured in Google Earth via the Outreach program include Arkive, the Global Heritage Fund, WaterAid, and the World Wide Fund for Nature.

Google Earth Engine

The Forest Landscape Integrity Index, created in Google Earth Engine

Google Earth Engine is a cloud computing platform for processing satellite imagery and other geospatial and observation data. It provides access to a large database of satellite imagery and the computational power needed to analyze those images. Google Earth Engine allows observation of dynamic changes in agriculture, natural resources, and climate using geospatial data from the Landsat satellite program, which passes over the same places on the Earth every sixteen days. Google Earth Engine has become a platform that makes Landsat and Sentinel-2 data easily accessible to researchers in collaboration with the Google Cloud Storage. Google Earth Engine provides a data catalog along with computers for analysis; this allows scientists to collaborate using data, algorithms, and visualizations. The platform provides Python and JavaScript application programming interfaces for making requests to the servers, and includes a graphical user interface for developing applications.

An early prototype of Earth Engine, based on the Carnegie Institute for Science's CLASlite system and Imazon’s Sistema de Alerta de Desmatamento (SAD) was demonstrated in 2009 at COP15, and Earth Engine was officially launched in 2010 at COP16, along with maps of the water in the Congo basin and forests in Mexico produced by researchers using the tool.

In 2013, researchers from University of Maryland produced the first high-resolution global forest cover and loss maps using Earth Engine, reporting an overall loss in global forest cover. Other early applications using Earth Engine spanned a diverse variety of topics, including: Tiger Habitat Monitoring, Malaria Risk Mapping, Global Surface Water, increases in vegetation around Mount Everest, and the annual Forest Landscape Integrity Index. Since then, Earth Engine has been used in the production of hundreds of scientific journal articles in many fields including: forestry and agriculture, hydrology, natural disaster monitoring and assessment, urban mapping, atmospheric and climate sciences and soil mapping.

Earth Engine has been free for academic and research purposes since its launch, but commercial use has been prohibited until 2021, when Google announced a preview of Earth Engine as a commercial cloud offering and early adopters that included Unilever, USDA and Climate Engine.

Controversy and criticism

The software has been criticized by a number of special interest groups, including national officials, as being an invasion of privacy or posing a threat to national security. The typical argument is that the software provides information about military or other critical installations that could be used by terrorists. Google Earth has been blocked by Google in Iran and Sudan since 2007, due to United States government export restrictions. The program has also been blocked in Morocco since 2006 by Maroc Telecom, a major service provider in the country.

Blurred out image of the Royal Stables in The Hague, Netherlands. This has since been lifted.

In the academic realm, increasing attention has been devoted to both Google Earth and its place in the development of digital globes. In particular, the International Journal of Digital Earth features multiple articles evaluating and comparing the development of Google Earth and its differences when compared to other professional, scientific, and governmental platforms. Google Earth's role in the expansion of "Earth observing media" has been examined to understand how it is shaping a shared cultural consciousness regarding climate change and humanity's capacity to treat the Earth as an engineerable object.

Defense

National security

Other concerns

  • Operators of the Lucas Heights nuclear reactor in Sydney, New South Wales, Australia, asked Google to censor high-resolution pictures of the facility. They later withdrew the request.
  • In 2009, Google superimposed old woodblock prints of maps from 18th- and 19th-century Japan over Japan today. These maps marked areas inhabited by the burakumin caste, formerly known as eta (穢多), literally "abundance of defilement", who were considered "non-humans" for their "dirty" occupations, including leather tanning and butchery. Descendants of members of the burakumin caste still face discrimination today and many Japanese people feared that some would use these areas, labeled etamura (穢多村 "eta village"), to target current inhabitants of them. These maps are still visible on Google Earth, but with the label removed where necessary.
  • Late 2000s versions of Google Earth require a software component running in the background that will automatically download and install updates. Several users expressed concerns that there is not an easy way to disable this updater, as it runs without the permission of the user.
  • In February 2014, the Berlin-based ART+COM charged that Google Earth products infringe U.S. Patent No. RE44,550, entitled "Method and Device for Pictorial Representation of Space-related Data" and had remarkable similarity to Terravision which was developed by ART+COM in 1993 and patented in 1995. The court decided against Art+Com both at trial and on appeal because trial testimony showed that Art+Com was aware of an existing, substantially similar invention that it failed to mention as "prior art" in its patent application, thereby invalidating their patent. Stephen Lau, a former employee of federally funded, not-for-profit Stanford Research Institute ("SRI") testified that he helped develop SRI TerraVision, an earth visualization application, and that he wrote 89% of the code. He further testified that he shared and discussed SRI Terravision code with Art+Com. Both systems used a multi-resolution pyramid of imagery to let users zoom from high to low altitudes, and both were called Terravision. Art+Com agreed to rename their product because SRI's came first. Stephen Lau died from COVID-19 in March 2020.

In popular culture

Google Earth is featured prominently in the 2021 German miniseries The Billion Dollar Code, which serves as a fictionalized account of a 2014 patent infringement lawsuit brought against Google by the German creators of Terravision. The series, which was shown on Netflix is prefaced by an episode of interviews with the ART+COM developers of TerraVision and their legal representative.

One of the co-founders of Keyhole has published a first-hand account claiming to debunk the origins, timelines and interpretations depicted in the fictionalized miniseries.

Christianity and violence

From Wikipedia, the free encyclopedia
 
A battle scene from the First Crusade. The Crusades were a series of military campaigns which were mainly waged between European Christians and Muslims.

Christians have had diverse attitudes towards violence and non-violence over time. Both currently and historically, there have been four attitudes towards violence and war and four resulting practices of them within Christianity: non-resistance, Christian pacifism, just war, and preventive war (Holy war, e.g., the Crusades). In the Roman Empire, the early church adopted a nonviolent stance when it came to war because the imitation of Jesus's sacrificial life was preferable to it. The concept of "just war", the belief that limited uses of war were acceptable, originated in the writings of earlier non-Christian Roman and Greek thinkers such as Cicero and Plato. Later, this theory was adopted by Christian thinkers such as St Augustine, who like other Christians, borrowed much of the just war concept from Roman law and the works of Roman writers like Cicero. Even though "Just War" concept was widely accepted early on, warfare was not regarded as a virtuous activity and expressing concern for the salvation of those who killed enemies in battle, regardless of the cause for which they fought, was common. Concepts such as "Holy war", whereby fighting itself might be considered a penitential and spiritually meritorious act, did not emerge before the 11th century.

Bible

Having Their Fling (1917) by Art Young
 

The Bible contains several texts which encourage, command, condemn, reward, punish, regulate and describe acts of violence.

Leigh Gibson and Shelly Matthews, associate professor of Religion at Furman University, write that some scholars, such as René Girard, "lift up the New Testament as somehow containing the antidote for Old Testament violence". According to John Gager, such an analysis risks advocating the views of the heresiarch Marcion of Sinope (c. 85–160), who made a distinction between the God of the Old Testament responsible for violence and the God of mercy found in the New Testament.

Mahatma Gandhi embraced the concept of nonviolence which he had found in both Indian Religions and the New Testament (e.g. Sermon on the Mount), which he then utilized in his strategy for social and political struggles.

Christian violence

I Believe in the Sword and Almighty God (1914). Anti-militaristic cartoon by Boardman Robinson.

J. Denny Weaver, Professor Emeritus of Religion at Bluffton University, suggests that there are numerous evolving views on violence and nonviolence throughout the history of Christian theology. According to the view of many historians, the Constantinian shift turned Christianity from a persecuted into a persecuting religion.

Miroslav Volf has identified the intervention of a "new creation", as in the Second Coming, as a particular aspect of Christianity that generates violence. Writing about the latter, Volf says: "Beginning at least with Constantine's conversion, the followers of the Crucified have perpetrated gruesome acts of violence under the sign of the cross. Over the centuries, the seasons of Lent and Holy Week were, for the Jews, times of fear and trepidation. Muslims also associate the cross with violence; crusaders' rampages were undertaken under the sign of the cross."

The statement attributed to Jesus "I come not to bring peace, but to bring a sword" has been interpreted by some as a call to arms for Christians. Mark Juergensmeyer argues that "despite its central tenets of love and peace, Christianity—like most traditions—has always had a violent side. The bloody history of the tradition has provided disturbing images and violent conflict is vividly portrayed in the Bible. This history and these biblical images have provided the raw material for theologically justifying the violence of contemporary Christian groups. For example, attacks on abortion clinics have been viewed not only as assaults on a practice that Christians regard as immoral, but also as skirmishes in a grand confrontation between forces of evil and good that has social and political implications", sometimes referred to as Spiritual warfare.

Higher law has been used to justify violence by Christians.

Historically, according to René Girard, many Christians embraced violence when it became the state religion of the Roman Empire: "Beginning with Constantine, Christianity triumphed at the level of the state and soon began to cloak with its authority persecutions similar to those in which the early Christians were victims."

Wars

Saint Augustine of Hippo, a seminal thinker on the concept of just war

Attitudes towards the military before Constantine

The study of Christian participation in military service in the pre-Constantinian era has been highly contested and has generated a great deal of literature.

Through most of the twentieth century, a consensus was formed around Adolf von Harnack's view that the early church was pacifist, that during the second and third centuries, a growing accommodation of military service occurred, and by the time of Constantine, a just war ethic had arisen.

This consensus was challenged mostly by the work of John Helgeland in the 1970s and 1980s. He said that most of the early Christians opposed military service because they refused to practice the Roman religion and they also refused to perform the rituals of the Roman army, not because they were against killing. Helgeland also stated that there is a diversity of voices in the written literature, as well as evidence of a diversity of practices by Christians. George Kalantzis, Professor of Theology at Wheaton College, sided with Harnack in the debate writing that "literary evidence confirms the very strong internal coherence of the Church's non-violent stance for the first three centuries."

David Hunter has concluded that a "new consensus" has emerged and it includes aspects of Helgeland's and Harnack's views. Hunter suggests that the early Christians based their opposition to military service upon both their "aboherrence of Roman army religion" (Helgeland's view) and their opposition to bloodshood (Harnack's view). Hunter notes that there is evidence that by the 2nd century Christian practices had started to diverge from the theological principles espoused in early Christian literature. Hunter's third point of the "new consensus" is the assertion that the just war theory reflects at least one pre-Constantinian view. Finally, to these three points, Kreider added that Christian attitudes towards violence were likely varied in different geographical locations, pointing out that pro-militarist views were stronger in border areas then they were in "heartland" areas which were more strongly aligned with the Empire.

There is little evidence concerning the extent of Christian participation in the military; generalizations are usually speculation. A few gravestones of Christian soldiers have been found.

Just war

Just war theory is a doctrine of military ethics of Roman philosophical and Catholic origin studied by moral theologians, ethicists, and international policy makers, that holds that a conflict can and ought to meet the criteria of philosophical, religious or political justice, provided it follows certain conditions.

The concept of justification for war under certain conditions goes back at least to Roman and Greek thinkers such as Cicero and Plato. However its importance is connected to Christian medieval theory beginning from Augustine of Hippo and Thomas Aquinas. According to Jared Diamond, Augustine of Hippo played a critical role in delineating Christian thinking about what constitutes a just war, and about how to reconcile Christian teachings of peace with the need for war in certain situations. Partly inspired by Cicero's writings, Augustine held that war could be justified in order to preserve the state, rectify wrongs by neighboring nations, and expand the state if a tyrant will lose power in doing so.

Forward with God! (1915). Anti-militaristic cartoon by Boardman Robinson.

In Ulrich Luz's formulation; "After Constantine, the Christians too had a responsibility for war and peace. Already Celsus asked bitterly whether Christians, by aloofness from society, wanted to increase the political power of wild and lawless barbarians. His question constituted a new actuality; from now on, Christians and churches had to choose between the testimony of the gospel, which included renunciation of violence, and responsible participation in political power, which was understood as an act of love toward the world." Augustine of Hippo's Epistle to Marcellinus (Ep 138) is the most influential example of the "new type of interpretation".

Just war theorists combine both a moral abhorrence towards war with a readiness to accept that war may sometimes be necessary. The criteria of the just war tradition act as an aid to determining whether resorting to arms is morally permissible. Just War theories are attempts "to distinguish between justifiable and unjustifiable uses of organized armed forces"; they attempt "to conceive of how the use of arms might be restrained, made more humane, and ultimately directed towards the aim of establishing lasting peace and justice."

The just war tradition addresses the morality of the use of force in two parts: when it is right to resort to armed force (the concern of jus ad bellum) and what is acceptable in using such force (the concern of jus in bello). In more recent years, a third category—jus post bellum—has been added, which governs the justice of war termination and peace agreements, as well as the prosecution of war criminals.

Holy War

In 1095, at the Council of Clermont, Pope Urban II declared that some wars could be deemed as not only a bellum iustum ("just war"), but could, in certain cases, rise to the level of a bellum sacrum (holy war). Jill Claster, dean of New York University College of Arts and Science, characterizes this as a "remarkable transformation in the ideology of war", shifting the justification of war from being not only "just" but "spiritually beneficial". Thomas Murphy examined the Christian concept of Holy War, asking "how a culture formally dedicated to fulfilling the injunction to 'love thy neighbor as thyself' could move to a point where it sanctioned the use of violence against the alien both outside and inside society". The religious sanctioning of the concept of "holy war" was a turning point in Christian attitudes towards violence; "Pope Gregory VII made the Holy War possible by drastically altering the attitude of the church towards war... Hitherto a knight could obtain remission of sins only by giving up arms, but Urban invited him to gain forgiveness 'in and through the exercise of his martial skills'." A holy war was defined by the Roman Catholic Church as "war that is not only just, but justifying; that is, a war that confers positive spiritual merit on those who fight in it".

In the 12th century, Bernard of Clairvaux wrote: "'The knight of Christ may strike with confidence and die yet more confidently; for he serves Christ when he strikes, and saves himself when he falls.... When he inflicts death, it is to Christ's profit, and when he suffers death, it is his own gain."

Jonathan Riley-Smith writes,

The consensus among Christians on the use of violence has changed radically since the crusades were fought. The just war theory prevailing for most of the last two centuries—that violence is an evil which can in certain situations be condoned as the lesser of evils—is relatively young. Although it has inherited some elements (the criteria of legitimate authority, just cause, right intention) from the older war theory that first evolved around a.d. 400, it has rejected two premises that underpinned all medieval just wars, including crusades: first, that violence could be employed on behalf of Christ's intentions for mankind and could even be directly authorized by him; and second, that it was a morally neutral force which drew whatever ethical coloring it had from the intentions of the perpetrators.

Genocidal warfare

Pope Innocent III excommunicating the Albigensians (left), Massacre against the Albigensians by the crusaders

The Biblical account of Joshua and the Battle of Jericho was used to justify genocide against Catholics by Oliver Cromwell. Daniel Chirot, professor of Russian and Eurasian studies at the University of Washington, interprets 1 Samuel 15:1–15:3 as "the sentiment, so clearly expressed, that because a historical wrong was committed, justice demands genocidal retribution."

Inquisition

The Inquisition was a group of institutions within the judicial system of the Catholic Church whose aim was to combat heresy The Spanish Inquisition is often cited in popular literature and history as an example of Catholic intolerance and repression. The total number of people who were processed by the Inquisition throughout its history was approximately 150,000; applying the percentages of executions that appeared in the trials of 1560–1700—about 2%—the approximate total would be about 3,000 of them were put to death. However, the actual death toll was probably higher, according to the data which Dedieu and García Cárcel provided to the tribunals of Toledo and Valencia, respectively. It is likely that between 3,000 and 5,000 people were executed. About 50 people were executed by the Mexican Inquisition. Included in that total are 29 people who were executed as "Judaizers" between 1571 and 1700 out of 324 people who were prosecuted for practicing the Jewish religion.

Contemporary illustration of the auto-da-fé of Valladolid, in which fourteen Protestants were burned at the stake for their faith, on May 21, 1559

In the Portuguese Inquisition, the major targets were people who had converted from Judaism to Catholicism, the Conversos, also known as New Christians or Marranos, because they were suspected of secretly practising Judaism. Many of these people were originally Spanish Jews, who had left Spain for Portugal. The number of victims of the Portuguese Inquisition is estimated to be around 40,000. One particular focus of the Spanish and Portuguese inquisitions was the issue of Jewish anusim and Muslim converts to Catholicism, partly because these minority groups were more numerous in Spain and Portugal than they were in many other parts of Europe, and partly because they were often considered suspect due to the assumption that they had secretly reverted to their former religions. The Goa Inquisition was the office of the Portuguese Inquisition which operated in Portuguese India, as well as in the rest of the Portuguese Empire in Asia. It was established in 1560, it was briefly suppressed from 1774 to 1778, and it was finally abolished in 1812. Based on the records that survive, H. P. Salomon and Rabbi Isaac S.D. Sassoon state that between the Inquisition's beginning in 1561 and its temporary abolition in 1774, some 16,202 persons were brought to trial by the Inquisition. Of this number, 57 of them were sentenced to death and executed, and another 64 were burned in effigy (this sentence was imposed on those persons who had either fled or died in prison; in the latter case, the executed person's remains and the effigy were both placed in a coffin and burned at the same time). Others were subjected to lesser punishments or penance, but the fate of many of those who were tried by the Inquisition is unknown.

During the second half of the 16th century, the Roman Inquisition was responsible for prosecuting individuals who were accused of committing a wide range of crimes which were related to religious doctrine, alternative religious doctrine or alternative religious beliefs. Out of 51,000–75,000 cases which were judged by the Inquisition in Italy after 1542, around 1,250 of them resulted in death sentences.

The period of witch trials in Early Modern Europe was a widespread moral panic caused by the belief that malevolent Satanic witches were operating as an organized threat to Christendom from the 15th to the 18th centuries. A variety of punishments was imposed upon those who were found guilty of witchcraft, including imprisonment, flogging, fines, or exile. In the Old Testament, Exodus 22:18 states that "Thou shalt not permit a sorceress to live". Many people faced capital punishment if they were convicted of witchcraft during this period, either by being burned at the stake, hanged on the gallows, or beheaded. Similarly, in the New England Colonies, people convicted of witchcraft were hanged (See Salem witch trials). The scholarly consensus on the total number of executions for witchcraft ranges from 40,000 to 60,000.

The legal basis for some inquisitorial activity came from Pope Innocent IV's papal bull Ad extirpanda of 1252, which explicitly authorized (and defined the appropriate circumstances for) the use of torture by the Inquisition for eliciting confessions from heretics. By 1256, inquisitors were given absolution if they used instruments of torture. "The overwhelming majority of sentences seem to have consisted of penances like wearing a cross sewn on one's clothes, going on pilgrimage, etc." When a suspect was convicted of unrepentant heresy, the inquisitorial tribunal was required by law to hand the person over to the secular authorities for final sentencing, at which point a magistrate would determine the penalty, which was usually burning at the stake although the penalty varied based on local law. The laws were inclusive of proscriptions against certain religious crimes (heresy, etc.), and the punishments included death by burning, although imprisonment for life or banishment would usually be used. Thus the inquisitors generally knew what would be the fate of anyone so remanded, and cannot be considered to have divorced the means of determining guilt from its effects.

Except for the Papal States, the institution of the Inquisition was abolished in Europe in the early 19th century, after the Napoleonic Wars and in the Americas, it was abolished after the Spanish American wars of independence. The institution survived as a part of the Roman Curia, but in 1904, it was renamed the "Supreme Sacred Congregation of the Holy Office". In 1965, it was renamed the Congregation for the Doctrine of the Faith.

Christian terrorism

Christian terrorism comprises terrorist acts that are committed by groups or individuals who use Christian motivations or goals as a justification for their actions. As with other forms of religious terrorism, Christian terrorists have relied on interpretations of the tenets of their faith—in this case, the Bible. Such groups have cited Old Testament and New Testament scriptures as justifications for acts of violence and killings or they have sought to bring about the "end times" which are described in the New Testament.

These interpretations are typically different from the interpretations of established Christian denominations.

Forced conversions

After the Constantinian shift, Christianity became entangled in government. While anthropologists have shown that throughout history the relationship between religion and politics has been complex, there is no doubt that religious institutions, including Christian ones, have been used coercively by governments, and that they have used coercion themselves. Augustine advocated government force in his Epistle 185, A Treatise Concerning the Correction of the Donatists, justifying coercion from scripture. He cites Jesus striking Paul during Paul's vision on the road to Damascus. He also cites the parable of the great banquet in Luke 14:22–23. Such short term pain for the sake of eternal salvation was an act of charity and love, in his view.

Examples of forced conversion to Christianity include: the Christian persecution of paganism under Theodosius I, the forced conversion and violent assimilation of pagan tribes in medieval Europe, the Inquisition, including its manifestations in Goa, Mexico, Portugal, and Spain, the forced conversion of indigenous children in North America and Australia.

Support of slavery

Early Christianity variously opposed, accepted, or ignored slavery. The early Christian perspectives on slavery were formed in the contexts of Christianity's roots in Judaism, and they were also shaped by the wider culture of the Roman Empire. Both the Old and New Testaments recognize the existence of the institution of slavery.

The earliest surviving Christian teachings about slavery are from Paul the Apostle. Paul did not renounce the institution of slavery, though perhaps this was not for personal reasons (similar to Aristotle). He taught that Christian slaves ought to serve their masters wholeheartedly. Nothing in the passage affirms slavery as a naturally valid or divinely mandated institution. Rather, Paul's discussion about the duties of Christian slaves and the responsibilities of Christian masters transforms the institution, even if it falls short of calling for slavery's outright abolition. In the ancient world the slave was a thing. Aristotle wrote that there could never be friendship between a master and a slave, for a master and a slave have nothing in common: "a slave is a living tool, just as a tool is an inanimate slave." Paul's words are entirely different. He calls the slave a "slave of Christ", one who wants to do "the will of God" and who will receive a "reward" for "whatever good he does". Likewise, the master is responsible to God for how he treats his slave, who is ultimately God's property rather than his own. This is another way of saying that the slave, no less than the master, has been made in God's image. As such, he possesses inestimable worth and great dignity. He is to be treated properly. In such a framework slavery, even though it was still slavery, could never be the same type of institution that was imposed on non-Christians. It was this transformation (which came from viewing all persons as being made in God's image) that ultimately destroyed slavery. Tradition describes Pope Pius I (term c. 158–167) and Pope Callixtus I (term c. 217–222) as former slaves.

Nearly all Christian leaders before the late 15th century recognised the institution of slavery, within specific Biblical limitations, as being consistent with Christian theology. In 1452, Pope Nicholas V instituted the hereditary slavery of captured Muslims and pagans, regarding all non-Christians as "enemies of Christ".

Genesis 9:25–27, the Curse of Ham, says: "Cursed be Canaan! The lowest of slaves will he be to his brothers. He also said, 'Blessed be the Lord, the God of Shem! May Canaan be the slave of Shem." This verse has been used to justify racialized slavery, since "Christians and even some Muslims eventually identified Ham's descendents as black Africans". Anthony Pagden argued that "This reading of the Book of Genesis merged easily into a medieval iconographic tradition in which devils were always depicted as black. Later pseudo-scientific theories would be built around African skull shapes, dental structure, and body postures, in an attempt to find an unassailable argument—rooted in whatever the most persuasive contemporary idiom happened to be: law, theology, genealogy, or natural science—why one part of the human race should live in perpetual indebtedness to another."

Rodney Stark makes the argument in For the Glory of God: How Monotheism Led to Reformations, Science, Witch-Hunts, and the End of Slavery, that Christianity helped to end slavery worldwide, as does Lamin Sanneh in Abolitionists Abroad. These authors point out that Christians who viewed slavery as wrong on the basis of their religious convictions spearheaded abolitionism, and many of the early campaigners for the abolition of slavery were driven by their Christian faith and a desire to realize their view that all people are equal under God.

Modern-day Christians generally condemn slavery as wrong and contrary to God's will. Only peripheral groups such as the Ku Klux Klan and other Christian hate groups which operate on the racist fringes of the Christian Reconstructionist and Christian Identity movements advocate the reinstitution of slavery. Full adherents of Christian Reconstructionism are few and they are marginalized among conservative Christians. With these exceptions, all Christian faith groups now condemn slavery, and they see the practice of slavery as being incompatible with basic Christian principles.

Violence against Jews

Jews burned alive for the alleged host desecration in Deggendorf, Bavaria, in 1337

A strain of hostility towards Judaism and the Jewish people developed among Christians in the early years of Christianity, persisted over the ensuing centuries, was driven by numerous factors including theological differences, the Christian drive for converts, which is decreed by the Great Commission, a misunderstanding of Jewish beliefs and practices, and the perception that Jews are hostile towards Christians.

Over the centuries, these attitudes were reinforced by Christian preaching, art and popular teaching, all of which expressed contempt for Jews.

Modern antisemitism has primarily been described as hatred against Jews as a race, a form of racism, rather than hatred against Jews as a religious group, because its modern expression is rooted in 18th century racial theories, while anti-Judaism is described as hostility towards the Jewish religion, a sentiment which is rooted in but more extreme than criticism of Judaism as a religion, but in Western Christianity, anti-Judaism was transformed into antisemitism during the 12th century.

Christian opposition to violence

The Rev. Martin Luther King Jr., a prominent advocate of Christian nonviolence

Historian Roland Bainton described the early church as pacifist—a period that ended with the accession of Constantine.

In the first few centuries of Christianity, many Christians refused to engage in military service. In fact, there were a number of famous examples of soldiers who became Christians and refused to engage in combat afterwards. They were subsequently executed for their refusal to fight. The commitment to pacifism and the rejection of military service are attributed by Mark J. Allman, professor in the Department of Religious and Theological Studies at Merrimack College, to two principles: "(1) the use of force (violence) was seen as antithetical to Jesus' teachings and service in the Roman military required worship of the emperor as a god which was a form of idolatry."

In the 3rd century, Origen wrote: "Christians could not slay their enemies." Clement of Alexandria wrote: "Above all, Christians are not allowed to correct with violence the delinquencies of sins." Tertullian argued forcefully against all forms of violence, considering abortion, warfare and even judicial death penalties to be forms of murder.

Pacifist and violence-resisting traditions have continued into contemporary times.

Several present-day Christian churches and communities were established specifically with nonviolence, including conscientious objection to military service, as foundations of their beliefs. Members of the Historic Peace Churches such as Quakers, Mennonites, Amish and the Church of the Brethren object to war based on their conviction that Christian life is incompatible with military actions, because Jesus enjoins his followers to love their enemies and refrain from committing acts of violence.

In the 20th century, Martin Luther King Jr. adapted the nonviolent ideas of Gandhi to a Baptist theology and politics.

In the 21st century, Christian feminist thinkers have drawn attention to their views by opposing violence against women.

Delayed-choice quantum eraser

From Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Delayed-choice_quantum_eraser A delayed-cho...