2017 North Korean Nuclear Test
North Korea conducted its sixth (and most recent to date) nuclear test on 3 September 2017, stating it had tested a thermonuclear weapon (hydrogen bomb). The United States Geological Survey reported an earthquake of 6.3 magnitude not far from North Korea's Punggye-ri nuclear test site. South Korean authorities said the earthquake seemed to be artificial, consistent with an underground nuclear test. The USGS, as well as China Earthquake Networks Center, reported that the initial event was followed by a second, smaller, earthquake at the site, several minutes later, which was characterized as a collapse of the cavity formed by the initial detonation. Nuclear device The North Korean government announced that it had detonated a hydrogen (thermonuclear) bomb that could be loaded onto an intercontinental ballistic missile (ICBM). The announcement stated the warhead had a variable yield "the explosive power of which is adjustable from tens kiloton to hundreds kiloton (sic) ... ndwh ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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United States Geological Survey
The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The agency also makes maps of planets and moons, based on data from U.S. space probes. The sole scientific agency of the U.S. Department of the Interior, USGS is a fact-finding research organization with no regulatory responsibility. It is headquartered in Reston, Virginia, with major offices near Lakewood, Colorado; at the Denver Federal Center; and in NASA Research Park in California. In 2009, it employed about 8,670 people. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on its hundredth anniversary, was "Earth Science in the Pub ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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38 North
''38 North'' is a website devoted to analysis about North Korea. Its name refers to the 38th parallel north which passes through the Korean peninsula and from 1945 until the start of the Korean War in 1950 divided the peninsula into North and South Korea. Formerly a program of the US-Korea Institute at Johns Hopkins University's Paul H. Nitze School of Advanced International Studies, it is now housed at the Stimson Center and is directed by Senior Fellow Jenny Town. Notable contributors include nuclear scientist Sigfried Hecker, former Associated Press Pyongyang Bureau Chief Jean H. Lee, cybersecurity expert James Andrew Lewis, and North Korea Tech founder Martyn Williams. Satellite imagery analysis ''38 North'' is an authoritative source of policy and technical analysis regarding North Korea's internal and external affairs. It aims to facilitate an informed public policy debate about peace and security on the Korean Peninsula and provide policymakers, practitioners and o ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Edwin Lyman
Edwin S. Lyman is a physicist and the Director of Nuclear Power Safety with the Union of Concerned Scientists (UCS). He specializes in nuclear proliferation, nuclear terrorism, and nuclear power safety. Lyman has published extensively in journals and magazines, testified before Congress and advised other government groups, and been cited in many news stories. He acted as an expert analyst for damage to the Fukushima Daiichi nuclear power plant after the 2011 Tōhoku earthquake and tsunami and co-authored ''Fukushima: The Story of a Nuclear Disaster'' (New Press, 2014). Education Lyman earned his A.B. in physics at New York University in 1986. At Cornell University he received his M.Sc. in 1990 and his Ph.D. in physics in 1992. He focused on string theory and high energy physics, preferring research with few military applications. Career From 1992 to 1995, Lyman did postdoctoral research on science and security policy at Princeton University in the Center for Energy a ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Scientific American
''Scientific American'', informally abbreviated ''SciAm'' or sometimes ''SA'', is an American popular science magazine. Many scientists, including Albert Einstein and Nikola Tesla, have contributed articles to it, with more than 150 Nobel Prize-winners being featured since its inception. In print since 1845, it is the oldest continuously published magazine in the United States. ''Scientific American'' is owned by Springer Nature, which is a subsidiary of Holtzbrinck Publishing Group. History ''Scientific American'' was founded by inventor and publisher Rufus Porter (painter), Rufus Porter in 1845 as a four-page weekly newspaper. The first issue of the large-format New York City newspaper was released on August 28, 1845. Throughout its early years, much emphasis was placed on reports of what was going on at the United States Patent and Trademark Office, U.S. Patent Office. It also reported on a broad range of inventions including perpetual motion machines, an 1860 devi ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Ivy King
Ivy King was the largest pure- fission nuclear bomb ever tested. The bomb was tested by the United States' Truman administration as part of Operation Ivy. This series of tests involved the development of very powerful nuclear weapons in response to the nuclear weapons program of the Soviet Union. The production of Ivy King was hurried to be ready in case its sister project, Ivy Mike, failed in its attempt to achieve a thermonuclear reaction. The Ivy King test actually took place two weeks after the Mike test. Unlike the Mike bomb, the Ivy King device could theoretically have been added to United States' nuclear arsenal, because it was designed to be air-deliverable. On November 16, 1952 at 11:30 local time (23:30 GMT) a B-36H bomber dropped the bomb over a point north of Runit Island in the Enewetak atoll, resulting in a 500 kiloton explosion at . The tropopause height at the time of the detonation was about . The top of the King cloud reached about with the mushroom base ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Nuclear Weapon
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission or atomic bomb) or a combination of fission and fusion reactions (thermonuclear weapon), producing a nuclear explosion. Both bomb types release large quantities of energy from relatively small amounts of matter. Nuclear bombs have had yields between 10 tons (the W54) and 50 megatons for the Tsar Bomba (see TNT equivalent). Yields in the low kilotons can devastate cities. A thermonuclear weapon weighing as little as can release energy equal to more than 1.2 megatons of TNT (5.0 PJ). Apart from the blast, effects of nuclear weapons include firestorms, extreme heat and ionizing radiation, radioactive nuclear fallout, an electromagnetic pulse, and a radar blackout. The first nuclear weapons were developed by the Allied Manhattan Project during World War II. Their production continues to require a large scientific and industrial complex, pr ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Nuclear Threat Initiative
The Nuclear Threat Initiative, generally referred to as NTI, is a non-profit organization located in Washington, D.C. NTI was founded in 2001 by former U.S. Senator Sam Nunn and philanthropist Ted Turner and describes itself as a "a nonprofit, nonpartisan global security organization focused on reducing nuclear, biological, and emerging technology threats imperiling humanity." NTI has four policy programs: the Global Nuclear Policy Program, Nuclear Materials Security, Emerging Tech, and Global Biological Policy and Programs (stylized as NTI , bio). Mission The Nuclear Threat Initiative is a nonprofit, nonpartisan global security organization focused on reducing nuclear, biological, and emerging technology threats imperiling humanity. History NTI was founded in 2001 by former U.S. Senator Sam Nunn and philanthropist Ted Turner. The launch event was held at the National Press Club on January 8, 2001. An event celebrating NTI's 20th anniversary was held on April 12, 2022, with ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Middlebury Institute Of International Studies At Monterey
Established in 1955, the Middlebury Institute of International Studies at Monterey (MIIS), formerly the Monterey Institute of International Studies, located in Monterey, California, is a Postgraduate education, graduate institute and satellite campus of Middlebury College. The Institute offers master's programs and certificates in environmental policy, public policy, international policy and international development (IPD), nonproliferation and terrorism studies (NPTS), threat intelligence, language teaching and translation (T), Language management (M), Language localisation (L), and Language interpretation (I). It is host to several related centers. History Founding and expansion The Middlebury Institute was established in 1955 by Gaspard Weiss as the Monterey Institute of Foreign Studies (MIFS). In 1961 the school moved to its current downtown Monterey, California, Monterey location, where it has since occupied 19 buildings that house multiple centers and numerous special ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Boosted Fission Weapon
A boosted fission weapon usually refers to a type of nuclear bomb that uses a small amount of fusion fuel to increase the rate, and thus yield, of a fission reaction. The fast fusion neutrons released by the fusion reactions add to the fast neutrons released due to fission, allowing for more neutron-induced fission reactions to take place. The rate of fission is thereby greatly increased such that much more of the fissile material is able to undergo fission before the core explosively disassembles. The fusion process itself adds only a small amount of energy to the process, perhaps 1%. The fuel is commonly a 50-50 deuterium-tritium gas mixture, although lithium-6-deuteride has also been tested. The alternative meaning is an obsolete type of single-stage nuclear bomb that uses thermonuclear fusion on a large scale to create fast neutrons that can cause fission in depleted uranium, but which is not a two-stage hydrogen bomb. This type of bomb was referred to by Edward Telle ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Royal United Services Institute
The Royal United Services Institute (RUSI, Rusi) is a defence and security think tank with its headquarters in London, United Kingdom. It was founded in 1831 by the Arthur Wellesley, 1st Duke of Wellington, Duke of Wellington, Arthur Wellesley. The institution was registered as Royal United Service Institute for Defence and Security Studies and formerly known as the Royal United Services Institute for Defence Studies. The current chair of RUSI is David Lidington, Sir David Lidington and its director-general is Rachel Ellehuus. History RUSI was founded in 1831, making it the oldest defence and security think tank in the world, at the initiative of the Arthur Wellesley, 1st Duke of Wellington, Duke of Wellington. Its original objective was to study naval and military science. The Duke of Wellington spearheaded the establishment of RUSI in a letter to ''Colbourn's United Service Journal'' arguing that "a United Service Museum" should be formed, managed entirely by naval and mil ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Paul H
Paul may refer to: People * Paul (given name), a given name, including a list of people * Paul (surname), a list of people * Paul the Apostle, an apostle who wrote many of the books of the New Testament * Ray Hildebrand, half of the singing duo Paul & Paula * Paul Stookey, one-third of the folk music trio Peter, Paul and Mary * Billy Paul, stage name of American soul singer Paul Williams (1934–2016) * Vinnie Paul, drummer for American Metal band Pantera * Paul Avril, pseudonym of Édouard-Henri Avril (1849–1928), French painter and commercial artist * Paul, pen name under which Walter Scott wrote ''Paul's letters to his Kinsfolk'' in 1816 * Jean Paul, pen name of Johann Paul Friedrich Richter (1763–1825), German Romantic writer Places * Paul, Cornwall, a village in the civil parish of Penzance, United Kingdom * Paul (civil parish), Cornwall, United Kingdom * Paul, Alabama, United States, an unincorporated community * Paul, Idaho, United States, a city * Paul, Nebrask ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Council On Foreign Relations
The Council on Foreign Relations (CFR) is an American think tank focused on Foreign policy of the United States, U.S. foreign policy and international relations. Founded in 1921, it is an independent and nonpartisan 501(c)(3) nonprofit organization with longstanding ties to political, corporate, and media elites. CFR is based in New York City, with an additional office in Washington, DC, Washington, D.C. Its Members of the Council on Foreign Relations, membership has included senior politicians, United States Secretary of State, secretaries of state, Central Intelligence Agency, CIA directors, bankers, lawyers, professors, corporate directors, CEOs, and prominent Mass media, media figures. CFR meetings convene government officials, global business leaders, and prominent members of the intelligence and foreign-policy communities to discuss international issues. CFR publishes the bi-monthly journal ''Foreign Affairs'' since 1922. It also runs the David Rockefeller Studies Progra ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |