Portal:North America

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North America is a continent in the Northern and Western Hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean. The region includes the Bahamas, Bermuda, Canada, the Caribbean, Central America, Clipperton Island, Greenland, Mexico, Saint Pierre and Miquelon, Turks and Caicos Islands, and the United States.

North America covers an area of about 24,709,000 square kilometers (9,540,000 square miles), representing approximately 16.5% of the Earth's land area and 4.8% of its total surface area. It is the third-largest continent by size after Asia and Africa, and the fourth-largest continent by population after Asia, Africa, and Europe. , North America's population was estimated as over 592 million people in 23 independent states, or about 7.5% of the world's population. In human geography, the terms "North America" and "North American" sometimes refer to just Canada, the United States, Mexico, and Greenland.

It is unknown with certainty how and when first human populations first reached North America. People were known to live in the Americas at least 20,000 years ago, but various evidence points to possibly earlier dates. The Paleo-Indian period in North America followed the Last Glacial Period, and lasted until about 10,000 years ago when the Archaic period began. The classic stage followed the Archaic period, and lasted from approximately the 6th to 13th centuries. Beginning in 1000 AD, the Norse were the first Europeans to begin exploring and ultimately colonizing areas of North America.

In 1492, the exploratory voyages of Christopher Columbus led to a transatlantic exchange, including migrations of European settlers during the Age of Discovery and the early modern period. Present-day cultural and ethnic patterns reflect interactions between European colonists, indigenous peoples, enslaved Africans, immigrants from Europe, Asia, and descendants of these respective groups. (Full article...)

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The Colorado River at Horseshoe Bend, Arizona, a few miles below Glen Canyon Dam

The Colorado River (Spanish: Río Colorado) is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and in northern Mexico. The 1,450-mile-long (2,330 km) river, the 5th longest in the United States, drains an expansive, arid watershed that encompasses parts of seven U.S. states and two Mexican states. The name Colorado derives from the Spanish language for "colored reddish" due to its heavy silt load. Starting in the central Rocky Mountains of Colorado, it flows generally southwest across the Colorado Plateau and through the Grand Canyon before reaching Lake Mead on the ArizonaNevada border, where it turns south toward the international border. After entering Mexico, the Colorado approaches the mostly dry Colorado River Delta at the tip of the Gulf of California between Baja California and Sonora.

Known for its dramatic canyons, whitewater rapids, and eleven U.S. National Parks, the Colorado River and its tributaries are a vital source of water for 40 million people. An extensive system of dams, reservoirs, and aqueducts divert almost its entire flow for agricultural irrigation and urban water supply. Its large flow and steep gradient are used to generate hydroelectricity, meeting peaking power demands in much of the Intermountain West. Intensive water consumption has dried up the lower 100 miles (160 km) of the river, which has rarely reached the sea since the 1960s. (Full article...)
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Trinity nuclear test
Trinity nuclear test
Credit: Berlyn Brixner
The Trinity nuclear test explosion, .016 seconds after detonation. The fireball is about 200 metres (700 ft) wide. Conducted by the United States on July 16, 1945, at a location 35 miles (56 km) southeast of Socorro, New Mexico, on what is now White Sands Missile Range, Trinity was the first test of technology for a nuclear weapon.

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Photo by Tee Corinne, 1983

Ann Weldy (born September 15, 1932), better known by her pen name Ann Bannon, is an American author who, from 1957 to 1962, wrote six lesbian pulp fiction novels known as The Beebo Brinker Chronicles. The books' enduring popularity and impact on lesbian identity has earned her the title "Queen of Lesbian Pulp Fiction". Bannon was a young housewife trying to address her own issues of sexuality when she was inspired to write her first novel. Her subsequent books featured four characters who reappeared throughout the series, including her eponymous heroine, Beebo Brinker, who came to embody the archetype of a butch lesbian. The majority of her characters mirrored people she knew, but their stories reflected a life she did not feel she was able to live. Despite her traditional upbringing and role in married life, her novels defied conventions for romance stories and depictions of lesbians by addressing complex homosexual relationships.

Her books shaped lesbian identity for lesbians and heterosexuals alike, but Bannon was mostly unaware of their impact. She stopped writing in 1962. Later, she earned a doctorate in linguistics and became an academic. She endured a difficult marriage for 27 years and, as she separated from her husband in the 1980s, her books were republished; she was stunned to learn of their influence on society. They were released again between 2001 and 2003 and were adapted as an award-winning Off-Broadway production. They are taught in women's and LGBT studies courses, and Bannon has received numerous awards for pioneering lesbian and gay literature. She has been described as "the premier fictional representation of US lesbian life in the fifties and sixties", and it has been said that her books "rest on the bookshelf of nearly every even faintly literate Lesbian". (Full article...)

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The convict cichlid (Amatitlania nigrofasciata) is a fish species from the family Cichlidae, native to Central America, also known as the zebra cichlid. Convict cichlids are popular aquarium fish and have also been the subject of numerous studies on fish behaviour. (Full article...)
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Calico Jack

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Credit: Uwebart
Avenida Costera Miguel Alemán (Malecón) in front of the port and the Zócalo in Acapulco, Mexico

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