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Long before the arrival of Christopher Columbus and before the incursions of the Spanish explorers and conquistadores in the 15th and 16th centuries, the Americas were home for thousands of years to a variety of civilizations and empires. As the understanding of agriculture improved and larger populations could be supported, small settlements grew into vast urban centres ruled by an aristocracy that was looked to among other things for propitiation of the gods. These civilizations waxed and waned (producing calendars and a writing system as well as huge building complexes) according to a natural order until the Spanish conquest. The resultant colonization wrought many changes, notably an overlay of the Spanish language, now the official language of most countries lying south of the United States. But less obviously, it brought cross-fertilization, a unique blending of local cultures with that of remote Spain and later of Africa as well, a melding that resulted in a distinctively Latin American style that was apparent in everything from art, dance, music, and literature to leadership. holiday in wales
We invite you to explore the people, places, events, and traditions that have shaped and continue to shape the vibrant Hispanic culture that thrives today in South, Central, and North America: people such as the gifted writer and Nobelist Octavio Paz, the talented dancer and choreographer Alicia Alonso, the celebrated liberator Sim n Bol var, the notorious dictator Augusto Pinochet, and the brilliant business leader Roberto Crispulo Goizueta; the various countries of Latin America; historical events such as the Mexican War (1846 48) and the Battle of Ayacucho (1824); and cultural celebrations such as Cinco de Mayo and the Day of the Dead. holiday wales
Encyclop dia Britannica is proud to present a new feature on one of history s darkest chapters, the Holocaust. Central to this feature is an overview article by Britannica s Holocaust adviser, Dr. Michael Berenbaum, the former director of the Holocaust Research Institute at the U.S. Holocaust Memorial Museum, former president of the Survivors of the Shoah Visual History Foundation, and author of The World Must Know and Witness to the Holocaust, among other books. This feature is divided into five parts, covering everything from the origins of the Holocaust in the mind of Adolf Hitler to the legacy of the horror in art and memory. Long-debated controversies are discussed, such as why the Allies chose not to bomb Hitler s death camps, as well as the actions of the Roman Catholic Church, and of Pope Pius XII in particular, during the years of the Holocaust. There are also extensive photographs and videos (warning: some of them are graphic), an extended bibliography, and discussion questions tied to each of the five parts and written especially for teachers and classroom use. Photos cottage holiday in wales
Britannica.com gathers the opinions of world leaders and thinkers on current social issues from human rights to theories on peace and nonviolence. books of hope forum current social issues book of hope human rights book of hopes women s movement dalai lama social philosophy political corruption peace queen noor landmine ban nelson mandela apartheid books of hope forum current social issues book of hope human rights book of hopes women s equality dalai lama social philosophy political corruption queen noor landmine ban disarmament nelson mandela apartheid mary robinson peace convention on the rights of the child jedediah purdy michael debakey twyla tharp cardinal etchegaray current social issues architecture frank gehry joseph rotblat peter eigen social philosophy betty friedan muhammad yunus micocredit grameen bank world visions norman borlaug current social issues william drayton world vision central america landmine ban michael debakey political corruption twyla tharp frank gehry joseph rotblat mary robinson new millennium cardinal etchegaray betty friedan william drayton jedediah purdy norman borlaug muhammad yunus nuruddin farah convention on the rights of the child new millennium world visions oscar arias sanchezReturn to Britannica.com Home Page You must have JavaScript enabled to view this feature. A printable version of this feature is available for users without JavaScript or Flash. caravan holiday in wales
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Photograph Bart Starr of the Green Bay Packers throwing a pass during Super Bowl I against the Kansas City accommodation holiday wales
The greatest written works in one magnificent collection. Visit Britannica Store Forgot Your Password Just enter the e-mail address that you used when you registered for Britannica Premium Service. We will e-mail your password to you at this address. holiday last minute wales
E-mail address:| Privacy Policy | Terms of Use | Legal Notices | Contact Us | Britannica Store | Become an Affiliate | Syndication | International Publishing | Webmaster | Advertise with Us | Partner with Us | Test Prep | RSS Feed: XML catering holiday self wales
Photograph The Whirlpool Galaxy (left), also known as M51, an Sc galaxy accompanied by a small, irregular holiday wales walking
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Afghanistan Main Article AfghanistanOfficial name: Islamic Republic of Afghanistan (Jomhuri-ye Eslami-ye Afghanestan [Dari]); Da Afghanestan Eslami Jamhuriyat (Pashto)1 adventure holiday wales
Form of government: Islamic republic1 with two legislative bodies (House of Elders [102]; House of the People [249]) Head of state and government: President Capital: Kabul Official languages: Dari; Pashto2 Official religion: Islam Monetary unit: (new) afghani (Af) Population estimate: (2007) 27, 145, 000 Total area (sq mi): 249, 347 Total area (sq km): 645, 807 (1) From promulgation of new constitution on Jan. 26, 2004. holiday park south wales
(2) Six additional locally official languages per the 2004 constitution are Uzbek, Turkmen, Balochi, Kafiri (Nuristani), Pashai, and Pamiri. Download the PDF fact sheet Recent Events for Afghanistan 2007 2006 2005 2004 2003 2002 2001 2000 cottage holiday wales
1999 1998 1997 1996 1995 1994 1993 In 2006, five years after the overthrow of the Taliban, the government of Pres. Hamid Karzai remained dependent upon international military assistance to face the threat of growing armed resistance. With no fighting force at his own command, Karzai was compelled to seek support from ethnic and provincial leaders supported by militias with little loyalty to a central government. A U.S.-trained Afghan National Army undertook its first serious engagement in the 2006 summer offensive, but its reliability remained uncertain. holiday in wales
Other Articles that Discuss Afghanistan For Subscribers: Explore articles that discuss or are related to the main article. holiday wales
(in Central Asian arts : Afghanistan and the sedentary population of Turkistan ; in Central Asian arts : Ghaznavids and Ghurids ) cottage holiday in wales
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Maps Flags Map/Still Afghanistan national flag, 1992 001. Flag History Learn about the history of this flag Maps See maps of this country World Atlas Explore this country and the ones that surround it in the World Atlas Statistical Information Additional tables are available in the main article Britannica Search Images Explore images from the main article Photograph The Blue Mosque at Mazr-e Sharf, Afghanistan. camping holiday wales
1 of 15Web Search Results from The Web s Best Sites for Afghanistan CIA - The World Factbook - Afghanistan U.S. Department of State: Afghanistan Library of Congress Country Study: Afghanistan U.S. Department of State - Consular Information Sheet - Afghanistan Consular information sheet on this Asian country. Covers entry and exit requirements, medical facilities, road conditions, and customs regulations. accommodation holiday wales
Video Each species has a unique set of chromosomes. These chromosomes, together with mitochondrial DNA, holiday last minute wales
Art The human genome is made up of approximately three billion base pairs of deoxyribonucleic acid catering holiday self wales
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21-centimetre radiation electromagnetic radiation of radio wavelength emitted by cold, neutral, interstellar hydrogen atoms. The hydrogen atom is composed of a positively ... 26th of July Movement revolutionary movement led by Fidel Castro that overthrew the regime of Fulgencio Batista in Cuba (1959). Its name commemorates an attack on the ... 3-D motion-picture process that gives a three-dimensional quality to film images. It is based on the fact that humans perceive depth by viewing with both ... 30 Doradus immense ionized-hydrogen region in the Large Magellanic Cloud, a satellite galaxy of the Milky Way system (in which the Earth is located). The nebula ... 38th parallel parallel of latitude that in East Asia roughly demarcates North and South Korea. The line was chosen by U.S. military planners at the Potsdam ... 4-H Club one of an organization of clubs for youth aged 10 to 21 who engage in programs of learning by doing. The clubs are found principally in the United ... 401(k) in the United States, a retirement savings program organized by employers but funded primarily by workers through paycheck deductions. Because ... 51 Pegasi fifth-magnitude star located 50 light-years away from Earth in the constellation Pegasus, the first sunlike star confirmed to possess a planet. 51 ... 61 Cygni first star whose distance from Earth (about 11 light-years) was measured (by Friedrich Wilhelm Bessel in 1838). The star is a visual binary the ... 9to5, National Association of Working Women organization established in 1973 and dedicated to improving the working conditions and ensuring the rights of women office workers in the United ... About Us | Privacy Policy | Terms of Use | Legal Notices | Contact Us | Britannica Store | Become an Affiliate | Syndication | International Publishing | Webmaster | Advertise with Us | Partner with Us | Test Prep | RSS Feed: XML Britannica online encyclopedia article on human genome: all of the approximately three billion base pairs of deoxyribonucleic acid (DNA) that make up the entire set of chromosomes of the human organism. The human genome includes the coding regions of DNA, which encode all the genes (about 25, 000) of the human organism, as well as the noncoding regions of DNA, which do not encode any genes. By 2003 the DNA sequence of the entire human genome was known. Social impacts of human genome research Print this Table of Contents Linked Articles polymerase chain reaction article 176 Shopping New! Britannica Book of the Year The Ultimate Review of 2007. 2007 Britannica Encyclopedia Set (32-Volume Set) Revised, updated, and still unrivaled. Special Offer! Activate a FREE trial to Britannica Online, your complete (re)search engine for when you need to be right. The human genome, like the genomes of all other living animals, is a collection of long polymers of DNA. These polymers are maintained in duplicate copy in the form of chromosomes in every human cell and encode in their sequence of constituent bases (guanine [G], adenine [A], thymine [T], and cytosine [C]) the details of the molecular and physical characteristics that form the corresponding organism. The sequence of these polymers, their organization and structure, and the chemical modifications they contain not only provide the machinery needed to express the information held within the genome but also provide the genome with the capability to replicate, repair, package, and otherwise maintain itself. In addition, the genome is essential for the survival of the human organism; without it no cell or tissue could live beyond a short period of time. For example, red blood cells (erythrocytes), which live for only about 120 days, and skin cells, which on average live for only about 17 days, must be renewed to maintain the viability of the human body, and it is within the genome that the fundamental information for the renewal of these cells, and many other types of cells, is found. The human genome is not uniform. Excepting identical (monozygous) twins, no two humans on Earth share exactly the same genomic sequence. Further, the human genome is not static. Subtle and sometimes not so subtle changes arise with startling frequency. Some of these changes are neutral or even advantageous; these are passed from parent to child and eventually become commonplace in the population. Other changes may be detrimental, resulting in reduced survival or decreased fertility of those individuals who harbour them; these changes tend to be rare in the population. The genome of modern humans, therefore, is a record of the trials and successes of the generations that have come before. Reflected in the variation of the modern genome is the range of diversity that underlies what are typical traits of the human species. There is also evidence in the human genome of the continuing burden of detrimental variations that sometimes lead to disease. Knowledge of the human genome provides an understanding of the origin of the human species, the relationships between subpopulations of humans, and the health tendencies or disease risks of individual humans. Indeed, in the past 20 years knowledge of the sequence and structure of the human genome has revolutionized many fields of study, including medicine, anthropology, and forensics. With technological advances that enable inexpensive and expanded access to genomic information, the amount of and the potential applications for the information that is extracted from the human genome is extraordinary. Role of the human genome in research Video:Specific segments of DNA are amplified (copied) in a laboratory using polymerase chain reaction Specific segments of DNA are amplified (copied) in a laboratory using polymerase chain reaction Encyclop dia Britannica, Inc. Since the 1980s there has been an explosion in genetic and genomic research. The combination of the discovery of the polymerase chain reaction, improvements in DNA sequencing technologies, advances in bioinformatics (mathematical biological analysis), and increased availability of faster, cheaper computing power has given scientists the ability to discern and interpret vast amounts of genetic information from tiny samples of biological material. Further, methodologies such as fluorescence in situ hybridization (FISH) and comparative genomic hybridization (CGH) have enabled the detection of the organization and copy number of specific sequences in a given genome. Understanding the origin of the human genome is of particular interest to many researchers since the genome is indicative of the evolution of humans. The public availability of full or almost full genomic sequence databases for humans and a multitude of other species has allowed researchers to compare and contrast genomic information between individuals, populations, and species. From the similarities and differences observed, it is possible to track the origins of the human genome and to see evidence of how the human species has expanded and migrated to occupy the planet. Copy and paste this code into your pageFlat areas of colour are bound by firm brush contours that contrast vibrantly with the rich texture of the hieroglyphic writing., Britannica Online Encyclopedia
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