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Geography is the study of the location, extent, distribution, frequency and interaction of all significant elements of the human and physical environment on or near the Earth's surface, particularly its features and of the distribution of life on the earth, including human life and the effects of human activity. The word geography derives from the Greek γη (ge) or γαια (gaia) ("Earth") and γραφειν (graphein) ("to inscribe"). Physical geography focuses on the physical, meteorological and ecological patterns and processes on Earth. Human geography focuses on economic, political and cultural processes and features in their spatial dimensions. In addition to studying human and natural features of Earth, Geographers also study Earth's place in the Solar System and the Universe and how this affects the Earth features (e.g. climate, sea currents and tides), as well as physical processes on other planets.

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Tulsa (pronounced /ˈtʌlsə/) is the second-largest city in the state of Oklahoma and 45th-largest city in the United States. With an estimated population of 385,635 in 2008, it is the principal municipality of the Tulsa Metropolitan Statistical Area, a region of 916,079 residents projected to reach one million between 2010 and 2012. In 2008, the Tulsa-Bartlesville Combined Statistical Area had a population of 966,531 residents. The city serves as the county seat of Tulsa County, the most densely populated county in Oklahoma, and extends into Osage, Rogers, and Wagoner counties.

Tulsa was first settled in the 1830s by the Lachapoka Band of Creek Native American tribe. In 1921, it was the site of the infamous Tulsa Race Riot, one of the largest and most destructive acts of racial violence in the history of the United States. For most of the 20th century, the city held the nickname "Oil Capital of the World" and played a major role as one of the most important hubs for the American oil industry. Tulsa, along with several other cities, claims to be the birthplace of U.S. Route 66. Tulsa is also known for its Western Swing music.

Once heavily dependent on the oil industry, economic downturn and subsequent diversification efforts created an economic base in the energy, finance, aviation, telecommunications and technology sectors. The Tulsa Port of Catoosa, at the head of the McClellan-Kerr Arkansas River Navigation System, is the most inland river port in the U.S. with access to international waterways. Two institutions of higher education within the city operate at the NCAA Division I level, Oral Roberts University and the University of Tulsa.

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Topographical map of Burma. Photo credit: Captain Blood

Did you know...

• ... that Colombia produces most of the world's emeralds (Gachala Emerald pictured)?
• ...that Typhoon Choi-wan was the first Category 5 equivalent super typhoon on the Saffir-Simpson Hurricane Scale during 2009?
• ...that the Benham Plateau is located in the West Philippine Basin and its basement is probably a micro-continent?
• ...that the 10th century reservoir Surajkund and the 8th century dam Anagpur are both located in Haryana, India?
• ...that the outlying islands of Scotland include the highest sea stack in the British Isles and one of the most isolated islets in the oceans of the world?

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Please feel free to list your new Geography-related articles here (newer articles at the top, please). Any new articles that have an interesting or unusual fact in them should be suggested for the Did you know? box on the Main Wikipedia page. DYN has a 72 hr. time limit from the creation of the article.

• Watersheds and basins
  • Great Lakes Basin
  • Lake Erie Basin
  • Lake Erie Watershed (Pennsylvania)
• Tripolis (Pontus)
• Pidurutalagala
• United States Numbered Bicycle Routes

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