Question:
Celtic art is associated with the peoples known as Celts; those who spoke the Celtic languages in Europe from pre-history through to the modern period, as well as the art of ancient peoples whose language is uncertain, but have cultural and stylistic similarities with speakers of Celtic languages. Celtic art is a difficult term to define, covering a huge expanse of time, geography and cultures. A case has been made for artistic continuity in Europe from the Bronze Age, and indeed the preceding Neolithic age; however archaeologists generally use "Celtic" to refer to the culture of the European Iron Age from around 1000 BC onwards, until the conquest by the Roman Empire of most of the territory concerned, and art historians typically begin to talk about "Celtic art" only from the La Tene period (broadly 5th to 1st centuries BC) onwards. Early Celtic art is another term used for this period, stretching in Britain to about 150 AD.
The ancient peoples now called "Celts" spoke a group of languages that had a common origin in the Indo-European language known as Common Celtic or Proto-Celtic. This shared linguistic origin was once widely accepted by scholars to indicate peoples with a common genetic origin in southwest Europe, who had spread their culture by emigration and invasion. Archaeologists identified various cultural traits of these peoples, including styles of art, and traced the culture to the earlier Hallstatt culture and La Tene culture. More recent genetic studies have indicated that various Celtic groups do not all have shared ancestry, and have suggested a diffusion and spread of the culture without necessarily involving significant movement of peoples. The extent to which "Celtic" language, culture and genetics coincided and interacted during prehistoric periods remains very uncertain and controversial. Celtic art is associated with the peoples known as Celts; those who spoke the Celtic languages in Europe from pre-history through to the modern period, as well as the art of ancient peoples whose language is uncertain, but have cultural and stylistic similarities with speakers of Celtic languages. The term "Celt" was used in classical times as a synonym for the Gauls (Keltoi, Celtae). Its English form is modern, attested from 1607. In the late 17th century the work of scholars such as Edward Lhuyd brought academic attention to the historic links between Gaulish and the Brythonic--and Goidelic--speaking peoples, from which point the term was applied not just to continental Celts but those in Britain and Ireland. Then in the 18th century the interest in "primitivism", which led to the idea of the "noble savage", brought a wave of enthusiasm for all things Celtic and Druidic. The "Irish revival" came after the Catholic Emancipation Act of 1829 as a conscious attempt to demonstrate an Irish national identity, and with its counterpart in other countries subsequently became the "Celtic Revival".
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What does the word mean?

Answer:
The ancient peoples now called "Celts" spoke a group of languages that had a common origin in the Indo-European language known as Common Celtic or Proto-Celtic.

input: NBC became the first large United States network to broadcast the same show every weekday during prime time since ABC's Who Wants to Be a Millionaire? marathons in 1999 and only the second since DuMont aired Captain Video and His Video Rangers from 1949 to 1955. More recently, the upstart MyNetwork TV had attempted, upon its launch in 2006, to air the same telenovelas every night of the week, a programming strategy that proved to be very unsuccessful. NBC's executives called the decision "a transformational moment in the history of broadcasting" and "in effect, launching five shows." An industry observer said that Leno, "in all my years, is the biggest risk a network has ever taken." According to former NBC president Fred Silverman, "If the Leno Show works, it will be the most significant thing to happen in broadcast television in the last decade." Although NBC had not developed a new hit show at 10 pm in years, industry executives criticized the network for abandoning a history of airing quality dramas at that hour such as Hill Street Blues, St. Elsewhere, and ER, which made NBC "the gold standard for sophisticated programming . . . the No. 1 network for affluent and well-educated young viewers" during the 1980s and 1990s. In addition, critics predicted that the decision would hurt NBC by undermining a reputation built on successful scripted shows. Other networks believed NBC's decision created an opportunity, and planned their 2009-2010 schedules accordingly. For example, the show competed with The Mentalist, CSI: Miami, CSI: NY, and Numb3rs, four of television's most popular series, on CBS (the first of those four series was moved to 10:00 PM to directly compete with Leno's show, and significantly improved the ratings for that timeslot compared to its predecessor). Leno was also not easily sold overseas. The January 29, 2010 issue of Entertainment Weekly listed the show at the top of a list of the 50 Biggest Bombs in television history. The comment made by the network executives about "launching five shows" was ultimately transformed into the joke that its removal was like "cancelling five shows". TV Guide similarly listed the show as the biggest blunder in television history in its November 1, 2010 edition.

Answer this question "Did Leno replace another talk show?"
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Answer the question at the end by quoting:

Eratosthenes of Cyrene (; Greek: Eratosthenes o Kurenaios, IPA:
Eratosthenes now continued from his knowledge about the Earth. Using his discoveries and knowledge of its size and shape, he began to sketch it. In the Library of Alexandria he had access to various travel books, which contained various items of information and representations of the world that needed to be pieced together in some organized format. In his three-volume work Geography (Greek: [Geographika] ), he described and mapped his entire known world, even dividing the Earth into five climate zones: two freezing zones around the poles, two temperate zones, and a zone encompassing the equator and the tropics. He had invented geography. He created terminology that is still used today. He placed grids of overlapping lines over the surface of the Earth. He used parallels and meridians to link together every place in the world. It was now possible to estimate one's distance from remote locations with this network over the surface of the Earth. In the Geography the names of over 400 cities and their locations were shown: this had never been achieved before. Unfortunately, his Geography has been lost to history, but fragments of the work can be pieced together from other great historians like Pliny, Polybius, Strabo, and Marcianus. The first book was something of an introduction and gave a review of his predecessors, recognizing their contributions that he compiled in the library. In this book Eratosthenes denounced Homer as not providing any insight into what he now described as geography. His disapproval of Homer's topography angered many who believed the world depicted in the Odyssey to be legitimate. He also commented on the ideas of the nature and origin of the Earth: he had thought of Earth as an immovable globe; while on its surface was a place that was changing. He had hypothesized that at one time the Mediterranean was a vast lake that covered the countries that surrounded it; and had only become connected to the ocean to the west when a passage had opened up sometime in its history. In the second book is his discovery about the circumference of the Earth. This is where, according to Pliny, "The world was grasped." Eratosthenes described his famous story of the well in Syene, described above. This book would now be considered a text on mathematical geography. His third book of the Geography contained political geography. He cited countries and used parallel lines to divide the map into sections, to give accurate descriptions of the realms. This was a breakthrough, and can be considered the beginning of geography.

How was he able to achieve this?
He cited countries and used parallel lines to divide the map into sections, to give accurate descriptions of the realms.