1.
United States
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Forty-eight of the fifty states and the federal district are contiguous and located in North America between Canada and Mexico. The state of Alaska is in the northwest corner of North America, bordered by Canada to the east, the state of Hawaii is an archipelago in the mid-Pacific Ocean. The U. S. territories are scattered about the Pacific Ocean, the geography, climate and wildlife of the country are extremely diverse. At 3.8 million square miles and with over 324 million people, the United States is the worlds third- or fourth-largest country by area, third-largest by land area. It is one of the worlds most ethnically diverse and multicultural nations, paleo-Indians migrated from Asia to the North American mainland at least 15,000 years ago. European colonization began in the 16th century, the United States emerged from 13 British colonies along the East Coast. Numerous disputes between Great Britain and the following the Seven Years War led to the American Revolution. On July 4,1776, during the course of the American Revolutionary War, the war ended in 1783 with recognition of the independence of the United States by Great Britain, representing the first successful war of independence against a European power. The current constitution was adopted in 1788, after the Articles of Confederation, the first ten amendments, collectively named the Bill of Rights, were ratified in 1791 and designed to guarantee many fundamental civil liberties. During the second half of the 19th century, the American Civil War led to the end of slavery in the country. By the end of century, the United States extended into the Pacific Ocean. The Spanish–American War and World War I confirmed the status as a global military power. The end of the Cold War and the dissolution of the Soviet Union in 1991 left the United States as the sole superpower. The U. S. is a member of the United Nations, World Bank, International Monetary Fund, Organization of American States. The United States is a developed country, with the worlds largest economy by nominal GDP. It ranks highly in several measures of performance, including average wage, human development, per capita GDP. While the U. S. economy is considered post-industrial, characterized by the dominance of services and knowledge economy, the United States is a prominent political and cultural force internationally, and a leader in scientific research and technological innovations. In 1507, the German cartographer Martin Waldseemüller produced a map on which he named the lands of the Western Hemisphere America after the Italian explorer and cartographer Amerigo Vespucci
2.
San Francisco
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San Francisco, officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California. It is the birthplace of the United Nations, the California Gold Rush of 1849 brought rapid growth, making it the largest city on the West Coast at the time. San Francisco became a consolidated city-county in 1856, after three-quarters of the city was destroyed by the 1906 earthquake and fire, San Francisco was quickly rebuilt, hosting the Panama-Pacific International Exposition nine years later. In World War II, San Francisco was a port of embarkation for service members shipping out to the Pacific Theater. Politically, the city votes strongly along liberal Democratic Party lines, San Francisco is also the headquarters of five major banking institutions and various other companies such as Levi Strauss & Co. Dolby, Airbnb, Weebly, Pacific Gas and Electric Company, Yelp, Pinterest, Twitter, Uber, Lyft, Mozilla, Wikimedia Foundation, as of 2016, San Francisco is ranked high on world liveability rankings. The earliest archaeological evidence of habitation of the territory of the city of San Francisco dates to 3000 BC. Upon independence from Spain in 1821, the became part of Mexico. Under Mexican rule, the system gradually ended, and its lands became privatized. In 1835, Englishman William Richardson erected the first independent homestead, together with Alcalde Francisco de Haro, he laid out a street plan for the expanded settlement, and the town, named Yerba Buena, began to attract American settlers. Commodore John D. Sloat claimed California for the United States on July 7,1846, during the Mexican–American War, montgomery arrived to claim Yerba Buena two days later. Yerba Buena was renamed San Francisco on January 30 of the next year, despite its attractive location as a port and naval base, San Francisco was still a small settlement with inhospitable geography. The California Gold Rush brought a flood of treasure seekers, with their sourdough bread in tow, prospectors accumulated in San Francisco over rival Benicia, raising the population from 1,000 in 1848 to 25,000 by December 1849. The promise of fabulous riches was so strong that crews on arriving vessels deserted and rushed off to the gold fields, leaving behind a forest of masts in San Francisco harbor. Some of these approximately 500 abandoned ships were used at times as storeships, saloons and hotels, many were left to rot, by 1851 the harbor was extended out into the bay by wharves while buildings were erected on piles among the ships. By 1870 Yerba Buena Cove had been filled to create new land, buried ships are occasionally exposed when foundations are dug for new buildings. California was quickly granted statehood in 1850 and the U. S. military built Fort Point at the Golden Gate, silver discoveries, including the Comstock Lode in Nevada in 1859, further drove rapid population growth. With hordes of fortune seekers streaming through the city, lawlessness was common, and the Barbary Coast section of town gained notoriety as a haven for criminals, prostitution, entrepreneurs sought to capitalize on the wealth generated by the Gold Rush
3.
California
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California is the most populous state in the United States and the third most extensive by area. Located on the western coast of the U. S, California is bordered by the other U. S. states of Oregon, Nevada, and Arizona and shares an international border with the Mexican state of Baja California. Los Angeles is Californias most populous city, and the second largest after New York City. The Los Angeles Area and the San Francisco Bay Area are the nations second- and fifth-most populous urban regions, California also has the nations most populous county, Los Angeles County, and its largest county by area, San Bernardino County. The Central Valley, an agricultural area, dominates the states center. What is now California was first settled by various Native American tribes before being explored by a number of European expeditions during the 16th and 17th centuries, the Spanish Empire then claimed it as part of Alta California in their New Spain colony. The area became a part of Mexico in 1821 following its war for independence. The western portion of Alta California then was organized as the State of California, the California Gold Rush starting in 1848 led to dramatic social and demographic changes, with large-scale emigration from the east and abroad with an accompanying economic boom. If it were a country, California would be the 6th largest economy in the world, fifty-eight percent of the states economy is centered on finance, government, real estate services, technology, and professional, scientific and technical business services. Although it accounts for only 1.5 percent of the states economy, the story of Calafia is recorded in a 1510 work The Adventures of Esplandián, written as a sequel to Amadis de Gaula by Spanish adventure writer Garci Rodríguez de Montalvo. The kingdom of Queen Calafia, according to Montalvo, was said to be a land inhabited by griffins and other strange beasts. This conventional wisdom that California was an island, with maps drawn to reflect this belief, shortened forms of the states name include CA, Cal. Calif. and US-CA. Settled by successive waves of arrivals during the last 10,000 years, various estimates of the native population range from 100,000 to 300,000. The Indigenous peoples of California included more than 70 distinct groups of Native Americans, ranging from large, settled populations living on the coast to groups in the interior. California groups also were diverse in their organization with bands, tribes, villages. Trade, intermarriage and military alliances fostered many social and economic relationships among the diverse groups, the first European effort to explore the coast as far north as the Russian River was a Spanish sailing expedition, led by Portuguese captain Juan Rodríguez Cabrillo, in 1542. Some 37 years later English explorer Francis Drake also explored and claimed a portion of the California coast in 1579. Spanish traders made unintended visits with the Manila galleons on their trips from the Philippines beginning in 1565
4.
United States dollar
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The United States dollar is the official currency of the United States and its insular territories per the United States Constitution. It is divided into 100 smaller cent units, the circulating paper money consists of Federal Reserve Notes that are denominated in United States dollars. The U. S. dollar was originally commodity money of silver as enacted by the Coinage Act of 1792 which determined the dollar to be 371 4/16 grain pure or 416 grain standard silver, the currency most used in international transactions, it is the worlds primary reserve currency. Several countries use it as their currency, and in many others it is the de facto currency. Besides the United States, it is used as the sole currency in two British Overseas Territories in the Caribbean, the British Virgin Islands and Turks and Caicos Islands. A few countries use the Federal Reserve Notes for paper money, while the country mints its own coins, or also accepts U. S. coins that can be used as payment in U. S. dollars. After Nixon shock of 1971, USD became fiat currency, Article I, Section 8 of the U. S. Constitution provides that the Congress has the power To coin money, laws implementing this power are currently codified at 31 U. S. C. Section 5112 prescribes the forms in which the United States dollars should be issued and these coins are both designated in Section 5112 as legal tender in payment of debts. The Sacagawea dollar is one example of the copper alloy dollar, the pure silver dollar is known as the American Silver Eagle. Section 5112 also provides for the minting and issuance of other coins and these other coins are more fully described in Coins of the United States dollar. The Constitution provides that a regular Statement and Account of the Receipts and that provision of the Constitution is made specific by Section 331 of Title 31 of the United States Code. The sums of money reported in the Statements are currently being expressed in U. S. dollars, the U. S. dollar may therefore be described as the unit of account of the United States. The word dollar is one of the words in the first paragraph of Section 9 of Article I of the Constitution, there, dollars is a reference to the Spanish milled dollar, a coin that had a monetary value of 8 Spanish units of currency, or reales. In 1792 the U. S. Congress passed a Coinage Act, Section 20 of the act provided, That the money of account of the United States shall be expressed in dollars, or units. And that all accounts in the offices and all proceedings in the courts of the United States shall be kept and had in conformity to this regulation. In other words, this act designated the United States dollar as the unit of currency of the United States, unlike the Spanish milled dollar the U. S. dollar is based upon a decimal system of values. Both one-dollar coins and notes are produced today, although the form is significantly more common
5.
Australian Open
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The Australian Open is a major tennis tournament held annually over the last fortnight of January in Melbourne, Australia. First held in 1905, the tournament is chronologically the first of the four Grand Slam tennis events of the year – the other three being the French Open, Wimbledon and the US Open. It features mens and womens singles, mens, womens and mixed doubles and juniors championships, as well as wheelchair, legends, the Australian Open typically has high attendances, rivalling and occasionally exceeding the US Open. The tournament holds the record for the highest attendance at a Grand Slam event, the Australian Open is managed by Tennis Australia, formerly the Lawn Tennis Association of Australia, and was first played at the Warehousemans Cricket Ground in Melbourne in November 1905. This facility is now known as the Albert Reserve Tennis Centre, the tournament was first known as the Australasian Championships and then became the Australian Championships in 1927 and the Australian Open in 1969. Since 1905, the Australian Open has been staged in five Australian and two New Zealand cities, Melbourne, Sydney, Adelaide, Brisbane, Perth, Christchurch and Hastings. Though started in 1905, the tournament was not designated as being a championship until 1924. The tournament committee changed the structure of the tournament to include seeding at that time, in 1972, it was decided to stage the tournament in Melbourne each year because it attracted the biggest patronage of any Australian city. The tournament was played at the Kooyong Lawn Tennis Club from 1972 until the move to the new Melbourne Park complex in 1988, the new facilities at Melbourne Park were envisaged to meet the demands of a tournament that had outgrown Kooyongs capacity. The move to Melbourne Park was an success, with a 90 percent increase in attendance in 1988 on the previous year at Kooyong. Because of Australias geographic remoteness, very few foreign players entered this tournament in the early 20th century, in the 1920s, the trip by ship from Europe to Australia took about 45 days. The first tennis players who came by boats were the US Davis Cup players in November 1946, even inside the country, many players could not travel easily. When the tournament was held in Perth, no one from Victoria or New South Wales crossed by train, in Christchurch in 1906, of a small field of 10 players, only two Australians attended and the tournament was won by a New Zealander. The first tournaments of the Australasian Championships suffered from the competition of the other Australasian tournaments, before 1905, all Australian states and New Zealand had their own championships, the first organised in 1880 in Melbourne and called the Championship of the Colony of Victoria. In those years, the best two players – Australian Norman Brookes and New Zealander Anthony Wilding – almost did not play this tournament, Brookes came once and won in 1911, and Wilding entered and won the competition twice. Their meetings in the Victorian Championships helped to determine the best Australasian players, even when the Australasian Championships were held in Hastings, New Zealand, in 1912, Wilding, though three times Wimbledon champion, did not come back to his home country. It was a problem for all players of the era. Brookes went to Europe only three times, where he reached the Wimbledon Challenge Round once and then won Wimbledon twice
6.
French Open
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The French Open, often referred to as Roland Garros, is a major tennis tournament held over two weeks between late May and early June at the Stade Roland Garros in Paris, France. Roland Garros is the only Grand Slam event held on clay, French spelling rules dictate that in the name of a place or event named after a person, the elements of the name are joined together with a hyphen. Therefore, the names of the stadium and the tournament are hyphenated as Roland-Garros, in 1891 the Championnat de France, which is commonly referred to in English as the French Championships, was begun. It was only open to players who were members of French clubs. The first winner was a Briton—H, the first womens singles tournament, with four entries, was held in 1897. The mixed doubles event was added in 1902 and the doubles in 1907. This French club members only tournament was played until 1924, using four different venues during that period, Île de Puteaux, in Puteaux, the Racing Club de France, played on clay. For one year,1909, it was played at the Société Athlétique de la Villa Primrose in Bordeaux, Tennis Club de Paris, at Auteuil, Paris, played on clay. Another tournament, the World Hard Court Championships, is considered the precursor to the French Open as it was open to international competitors. Winners of this tournament included world no, 1s such as Tony Wilding from New Zealand and Bill Tilden from the US. In 1924 there was no World Hard Court Championships due to tennis being played at the Paris Olympic Games, in 1925, the French Championships became open to all amateurs internationally and was designated a major championship by the ILTF. It was held at the Stade Français in Saint-Cloud in 1925 and 1927, in 1926 the Racing Club de France hosted the event in Paris, site of the previous French club members only Championship, also on clay. In 1928, the Roland Garros stadium was opened and the event has held there ever since. After the Mousquetaires or Philadelphia Four won the Davis Cup on American soil in 1927, the Stade de France had offered the tennis authorities three hectares of land with the condition that the new stadium must be named after the World War I pilot, Roland Garros. The new Stade de Roland Garros, and its Center Court hosted that Davis Cup challenge, during World War II the tournament was held from 1941 through 1945 on the same grounds but these editions are not recognized by the French governing body, Fédération Française de Tennis. From 1946 through 1947, the French Championships were held after Wimbledon, in 1968, the French Championships became the first Grand Slam tournament to go open, allowing both amateurs and professionals to compete. Since 1981, new prizes have been presented, the Prix Orange, the Prix Citron, in another novelty, since 2006 the tournament has begun on a Sunday, featuring 12 singles matches played on the three main courts. Additionally, on the eve of the opening, the traditional Benny Berthet exhibition day takes place
7.
The Championships, Wimbledon
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The Championships, Wimbledon, commonly known simply as Wimbledon, is the oldest tennis tournament in the world, and is widely considered the most prestigious. It has been held at the All England Club in Wimbledon, London, Wimbledon is one of the four Grand Slam tennis tournaments, the others being the Australian Open, the French Open and the US Open. Since the Australian Open shifted to hardcourt in 1988, Wimbledon is the only major still played on grass. The tournament takes place two weeks in late June and early July, culminating with the Ladies and Gentlemens Singles Final. Five major, junior, and invitational events are each year. Wimbledon traditions include a dress code for competitors and Royal patronage. The tournament is notable for the absence of sponsor advertising around the courts. In 2009, Wimbledons Centre Court was fitted with a roof to lessen the loss of playing time due to rain. The All England Lawn Tennis and Croquet Club is a club founded on 23 July 1868. Its first ground was off Worple Road, Wimbledon, in 1876, lawn tennis, a game devised by Major Walter Clopton Wingfield a year or so earlier and originally given the name Sphairistikè, was added to the activities of the club. In spring 1877, the club was renamed The All England Croquet and Lawn Tennis Club, a new code of laws, replacing the code administered by the Marylebone Cricket Club, was drawn up for the event. Todays rules are similar except for such as the height of the net and posts. The inaugural 1877 Wimbledon Championship started on 9 July 1877 and the Gentlemens Singles was the event held. It was won by Spencer Gore, an old Harrovian rackets player, about 200 spectators paid one shilling each to watch the final. The lawns at the ground were arranged so that the court was in the middle with the others arranged around it. The name was retained when the Club moved in 1922 to the present site in Church Road, however, in 1980 four new courts were brought into commission on the north side of the ground, which meant the Centre Court was once more correctly defined. The opening of the new No.1 Court in 1997 emphasised the description, by 1882, activity at the club was almost exclusively confined to lawn tennis and that year the word croquet was dropped from the title. However, for reasons it was restored in 1899
8.
US Open (tennis)
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The United States Open Tennis Championships is a hardcourt tennis tournament. The tournament is the version of one of the oldest tennis championships in the world. The US Open is held annually, starting on the last Monday in August, the main tournament consists of five event championships, mens and womens singles, mens and womens doubles, and mixed doubles, with additional tournaments for senior, junior, and wheelchair players. Since 1978, the tournament has played on acrylic hard courts at the USTA Billie Jean King National Tennis Center in Flushing Meadows–Corona Park, Queens. The US Open is owned and organized by the United States Tennis Association, net proceeds from ticket sales, sponsorships, and television deals are used to promote the development of tennis in the United States. The US Open is the only Grand Slam that employs tiebreakers in every set of a match, the first edition was won by Richard Sears, who went on to win seven consecutive singles titles. In the first years of the U. S. National Championship only men competed and this was followed by the introduction of the U. S. Womens National Doubles Championship in 1899 and the U. S. The womens tournament used a system from 1888 through 1918. This view was opposed by another group of players which included eight former national singles champions, the contentious issue was brought to a vote at the annual USNLTA meeting on February 5,1915 and with 128 votes in favor and 119 against it was decided to relocate. From 1921 through 1923, the tournament was played at the Germantown Cricket Club in Philadelphia and it returned to Forest Hills in 1924 following the completion of the newly constructed 14,000 seat concrete Forest Hills Stadium. Though regarded unofficially by many as a major championship beforehand, the tournament was officially designated as one of the tournaments by the ILTF commencing in 1924. At the 1922 U. S. National Championships the draw for the first time included seeded players in order to avoid leading players drawing against each other in the early rounds. Open era The open era began in 1968 when all five events were merged into the US Open, the 1968 combined tournament was open to professionals for the first time. That year,96 men and 63 women entered the event, from 1970 to 1974 the US Open used a best-of-nine point, sudden death tiebreaker before moving to the ITF best-of-twelve point system. In 1973 the US Open became the first Grand Slam tournament to award equal prize money to men and women with that years singles champions John Newcombe, another US Open innovation came in 1975 when floodlights enabled night play for the first time. In 1978 the tournament moved from the West Side Tennis Club, Forest Hills, Queens to the larger USTA National Tennis Center in Flushing Meadows, Queens, three miles to the north. In the process, the tournament switched the court surface from clay, jimmy Connors is the only individual to have won US Open singles titles on all three surfaces, while Chris Evert is the only woman to win on two surfaces. The US Open is the only Grand Slam tournament that has played every year since its inception
9.
Tennis
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Tennis is a racket sport that can be played individually against a single opponent or between two teams of two players each. Each player uses a racket that is strung with cord to strike a hollow rubber ball covered with felt over or around a net. The object of the game is to play the ball in such a way that the opponent is not able to play a valid return, the player who is unable to return the ball will not gain a point, while the opposite player will. Tennis is an Olympic sport and is played at all levels of society, the sport can be played by anyone who can hold a racket, including wheelchair users. The modern game of tennis originated in Birmingham, England, in the late 19th century as lawn tennis and it had close connections both to various field games such as croquet and bowls as well as to the older racket sport of real tennis. The rules of tennis have changed little since the 1890s, two exceptions are that from 1908 to 1961 the server had to keep one foot on the ground at all times, and the adoption of the tiebreak in the 1970s. Tennis is played by millions of players and is also a popular worldwide spectator sport. Historians believe that the ancient origin lay in 12th century northern France. Louis X of France was a player of jeu de paume, which evolved into real tennis. Louis was unhappy with playing tennis outdoors and accordingly had indoor, in due course this design spread across royal palaces all over Europe. Because of the accounts of his death, Louis X is historys first tennis player known by name. Another of the enthusiasts of the game was King Charles V of France. It wasnt until the 16th century that rackets came into use, and the game began to be called tennis, from the French term tenez, an interjection used as a call from the server to his opponent. It was popular in England and France, although the game was played indoors where the ball could be hit off the wall. Henry VIII of England was a big fan of this game, during the 18th century and early 19th century, as real tennis declined, new racket sports emerged in England. This in turn led to the codification of rules for many sports, including lawn tennis, most football codes, lawn bowls. In 1872, along with two doctors, they founded the worlds first tennis club in Leamington Spa. Evans, turfgrass agronomist, Sports historians all agree that deserves much of the credit for the development of modern tennis, according to Honor Godfrey, museum curator at Wimbledon, Wingfield popularized this game enormously
10.
Pan American Games
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The Pan-American or Pan American Games is a major sporting event in the Americas featuring summer sports, in which thousands of athletes participate in a variety of competitions. The competition is held among athletes from nations of the Americas, the only Winter Pan American Games were held in 1990. The Pan American Sports Organization is the body of the Pan American Games movement, whose structure. The XVII Pan American Games were held in Toronto from July 10–26,2015, since 2007, host cities are contracted to manage both the Pan American and the Parapan American Games, in which athletes with physical disabilities compete with one another. The Parapan American Games are held following the Pan American Games. The Pan American Games Movement consists of sports federations, National Olympic Committees that are recognized by PASO. As the decision-making body, PASO is responsible for choosing the host city for each Pan American Games, the host city is responsible for organizing and funding a celebration of the Games consistent with the Olympic Charter and rules. The Pan American Games program, consisting of the sports to be contested at the Games, is determined by PASO, the celebration of the Games encompasses many rituals and symbols, such as the flag and torch, and the opening and closing ceremonies. Over 5,000 athletes compete at the Pan American Games in 36 sports, the first, second, and third-place finishers in each event receive gold, silver, and bronze medals, respectively. At the first Pan American Sports Congress, held in Buenos Aires in 1940, the plans had to be postponed because of World War II. A second Pan American Sports Congress held in London during the 1948 Summer Olympics reconfirmed Buenos Aires as the choice of host city for the inaugural games, countries that were part of the Commonwealth of Nations such as Canada did not compete at the first Pan American Games. The second games were held in Mexico City, Mexico, competitions started on March 12 and included 2,583 athletes from 22 countries, competing in 17 sports. The Pan American Games were held every four years in the cities of Chicago, United States in 1959, São Paulo, Brazil in 1963 and Winnipeg. While the inaugural 1951 Games hosted 2,513 participants representing 14 nations, during the games most athletes and officials are housed in the Pan American Games village. This village is intended to be a home for all the participants. It is furnished with cafeterias, health clinics, and locations for religious expression, PASO allows nations to compete that do not meet the strict requirements for political sovereignty that other international organizations demand. As a result, colonies and dependencies are permitted to set up their own National Olympic Committees, examples of this include territories such as Puerto Rico and Bermuda which compete as separate nations despite being legally under the jurisdiction of another power. There have been attempts to hold Winter Pan American Games throughout the history of the games, reliable winter snow in the Americas is limited to two countries, the United States and Canada
11.
Universiade
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The Universiade is an international multi-sport event, organized for university athletes by the International University Sports Federation. The name is a combination of the words University and olympiad, the Universiade is often referred to in English as the World University Games or World Student Games, however, this latter term can also refer to competitions for sub-University grades students. The Universiade is the largest multi-sport event in the world apart from the Olympic Games, the most recent games were in 2017, the Winter Universiade was in Almaty, Kazakhstan, while the 2015 Summer Universiade was in Gwangju, Korea. The idea of an international sports competition between student-athletes pre-dates the 1949 formation of the International University Sports Federation, which now hosts the Universiade. This did not come to pass, but an event was created in Germany in 1909 in the form of the Academic Olympia. Five editions were held from 1909 to 1913, all of which were hosted in Germany following the cancellation of an Italy-based event, at the start of the 20th century, Jean Petitjean of France began attempting to organise a University Olympic Games. After discussion with Pierre de Coubertin, the founder of the modern Olympic Games, Petitjean, and later the Confederation Internationale des Etudiants, was the first to build a series of international events, beginning with the 1923 International Universities Championships. This was followed by the renamed 1924 Summer Student World Championships a year later, another name change resulted in the 1930 International University Games. The CIEs International University Games was held four times in the 1930s before having its final edition in 1947. A separate group organised an alternative university games in 1939 in Vienna, the onset of World War II ceased all major international student sport activities and the aftermath also led to division among the movement, as the CIE was disbanded and rival organisations emerged. The Union Internationale des Étudiants incorporated a university sports games into the World Festival of Youth and Students from 1947–1962, including one separate and this event principally catered for Eastern European countries. The Sports Week was held biennially until 1955, like the CIEs games before it, the FISU events were initially Western-led sports competitions. Division between the largely Western European FISU and Eastern European UIE eventually began to dissipate among broadened participation at the 1957 World University Games. This event was not directly organised by either group, instead being organised by Jean Petitjean in France, the FISU-organised Universiade became the direct successor to this competition, maintaining the biennial format into the inaugural 1959 Universiade. It was not until the 1957 World University Games that the Soviet Union began to compete in FISU events. That same year, what had previously been a European competition became a global one, with the inclusion of Brazil, Japan. The increased participation ultimately led to the establishment of the Universiade as the global student sport championship. Official website of the International University Sports Federation Official website of the German University Sports Federation Official report of the Winter Universiade Innsbruck / Seefeld 2005
12.
Sustainable energy
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Sustainable energy is energy that is consumed at insignificant rates compared to its supply and with manageable collateral effects, especially environmental effects. Another common definition of energy is an energy system that serves the needs of the present without compromising the ability of future generations to meet their needs. The organizing principle for sustainability is sustainable development, which includes the four interconnected domains, ecology, economics, politics, sustainability science is the study of sustainable development and environmental science. Costs have fallen dramatically in recent years, and continue to fall, most of these technologies are either economically competitive or close to being so. Increasingly, effective government policies support investor confidence and these markets are expanding, considerable progress is being made in the energy transition from fossil fuels to ecologically sustainable systems, to the point where many studies support 100% renewable energy. Energy efficiency and renewable energy are said to be the pillars of sustainable energy. In the broader context of development, there are three pillars, ecology, economy and society. Sustainable Energy has two key components, renewable energy and energy efficiency. And, The solution will lie in finding sustainable energy sources, – Sustainable Energy by J. W. Tester, et al. from MIT Press. – Invest, a green technology non-profit organization, Energy which is replenishable within a human lifetime and causes no long-term damage to the environment. Sustainable energy can produce some pollution of the environment, as long as it is not sufficient to prohibit use of the source for an indefinite amount of time. Sustainable energy is also distinct from low-carbon energy, which is only in the sense that it does not add to the CO2 in the atmosphere. Green Energy is energy that can be extracted, generated, and/or consumed without any significant negative impact to the environment, the planet has a natural capability to recover which means pollution that does not go beyond that capability can still be termed green. Green power is a subset of renewable energy and represents those renewable energy resources and technologies that provide the highest environmental benefit. The U. S. Environmental Protection Agency defines green power as electricity produced from solar, wind, geothermal, biogas, biomass, customers often buy green power for avoided environmental impacts and its greenhouse gas reduction benefits. The International Energy Agency states that, Conceptually, one can define three generations of technologies, reaching back more than 100 years. First-generation technologies emerged from the revolution at the end of the 19th century and include hydropower, biomass combustion and geothermal power. Some of these technologies are still in widespread use, second-generation technologies include solar heating and cooling, wind power, modern forms of bioenergy and solar photovoltaics. These are now entering markets as a result of research, development, many of the technologies reflect significant advancements in materials
United States
Lee Hyung-taik
André Sá
Cecil Mamiit
Frank Dancevic
Adrián García