Airways or air routes are designated routes which aeroplanes fly to aid in navigation and help with separation to avoid accidents.
Airways are defined with segments within a specific altitude block, corridor width, and between fixed geographic coordinates for satellites navigation system, or between ground-based radio transmitter navigational aids (navaids; such as VORs or NDBs) or the intersection of specific radials of two navaids.
The San Francisco Ferry Building is a terminal for ferries that travel across the San Francisco Bay, a food hall and an office building. It is located on The Embarcadero in San Francisco, California and is served by Golden Gate Ferry and San Francisco Bay Ferry routes.
On top of the building is a 245-foot-tall (75 m) clock tower with four clock dials, each 22 feet (6.7 m) in diameter, which can be seen from Market Street, a main thoroughfare of the city.
The Embarcadero (Spanish for "Embarkment") is the eastern waterfront of Port of San Francisco and a major roadway in San Francisco, California, United States. It was constructed on reclaimed land along a three mile long engineered seawall, from which piers extend into the bay. It derives its name from the Spanish verb embarcar, meaning "to embark"; embarcadero itself means "the place to embark." The Central Embarcadero Piers Historic District was added to the National Register of Historic Places on November 20, 2002.
The Embarcadero right-of-way begins at the intersection of Second and King Streets near Oracle Park, and travels north, passing under the San Francisco–Oakland Bay Bridge. The Embarcadero continues north past the Ferry Building at Market Street, Pier 39, and Fisherman's Wharf, before ending at Pier 45. A section of The Embarcadero which ran between Folsom Street and Drumm Street was formerly known as East Street.
The San Francisco–Oakland Bay Bridge, commonly referred to as the Bay Bridge, is a complex of bridges spanning San Francisco Bay in California. As part of Interstate 80 and the direct road between San Francisco and Oakland, it carries about 260,000 vehicles a day on its two decks. It includes one of the longest bridge spans in the United States.
The toll bridge was conceived as early as the California gold rush days, with "Emperor" Joshua Norton famously advocating for it around 1855-60, but construction did not begin until 1933. Designed by Charles H. Purcell, and built by American Bridge Company, it opened on Thursday, November 12, 1936, six months before the Golden Gate Bridge. It originally carried automobile traffic on its upper deck, with trucks, cars, buses and commuter trains on the lower, but after the Key System abandoned its rail service on April 20, 1958, the lower deck was converted to all-road traffic as well. On October 12, 1963, traffic was reconfigured to one way traffic on each deck, westbound on the upper deck, and eastbound on the lower deck, with trucks and buses also allowed on the upper deck. In 1986, the bridge was unofficially dedicated to former California governor James Rolph.
The lowest natural temperature ever directly recorded at ground level on Earth is −89.2 °C (−128.6 °F; 184.0 K) at the then-Soviet Vostok Station in Antarctica on 21 July 1983 by ground measurements.
On 10 August 2010, satellite observations showed a surface temperature of −92 °C (−134 °F; 181 K) at 81°48′S 59°18′E / 81.8°S 59.3°E, along a ridge between Dome Argus and Dome Fuji, at 3,900 m (12,800 ft) elevation. The result was reported at the 46th annual meeting of the American Geophysical Union in San Francisco, California, in December 2013; it is a provisional figure, and may be subject to revision. The value is not listed as the record lowest temperature as it was measured by remote sensing from satellite and not by ground-based thermometers, unlike the 1983 record. The temperature announced reflects that of the ice surface, while the Vostok readings measured the air above the ice, and so the two are not directly comparable. Later work shows many locations in the high Antarctic where surface temperatures drop to approximately −98 °C (−144 °F; 175 K). Due to the very strong temperature gradient near the surface, these imply near-surface air temperature minima of approximately −94 °C (−137 °F; 179 K).
The San Francisco Bay Area, commonly known as the Bay Area, is a region of California surrounding and including San Francisco Bay, and anchored by the cities of Oakland, San Francisco, and San Jose. The Association of Bay Area Governments defines the Bay Area as including the nine counties that border the estuaries of San Francisco Bay, San Pablo Bay, and Suisun Bay: Alameda, Contra Costa, Marin, Napa, San Mateo, Santa Clara, Solano, Sonoma, and San Francisco. Other definitions may be either smaller or larger, and may include neighboring counties which are not officially part of the San Francisco Bay Area, such as the Central Coast counties of Santa Cruz, San Benito, and Monterey, or the Central Valley counties of San Joaquin, Merced, and Stanislaus. The Bay Area is known for its natural beauty, prominent universities, technology companies, and affluence. The Bay Area contains many cities, towns, airports, and associated regional, state, and national parks, connected by a complex multimodal transportation network.
The earliest archaeological evidence of human settlements in the Bay Area dates back to 8000–10,000 BC. The oral tradition of the Ohlone and Miwok people suggests they have been living in the Bay Area for several hundreds if not thousands of years. The Spanish empire claimed the area beginning in the early period of Spanish colonization of the Americas. The earliest Spanish exploration of the Bay Area took place in 1769. The Mexican government controlled the area from 1821 until the 1848 Treaty of Guadalupe Hidalgo. Also in 1848, James W. Marshall discovered gold in nearby mountains, resulting in explosive immigration to the area and the precipitous decline of the Native population. The California gold rush brought rapid growth to San Francisco. California was admitted as the 31st state in 1850. A major earthquake and fire leveled much of San Francisco in 1906. During World War II, the Bay Area played a major role in America's war effort in the Asiatic-Pacific Theater, with the San Francisco Port of Embarkation, of which Fort Mason was one of 14 installations and location of the headquarters, acting as a primary embarkation point for American forces. Since then, the Bay Area has experienced numerous political, cultural, and artistic movements, developing unique local genres in music and art and establishing itself as a hotbed of progressive politics. The postwar Bay Area saw large growth in the financial and technology industries, creating an economy with a gross domestic product of over $700 billion. In 2018 it was home to the third-highest concentration of Fortune 500 companies in the United States.
Vancouver is a major city in Western Canada, located in the Lower Mainland region of British Columbia. As the most populous city in the province, the 2021 Canadian census recorded 662,248 people in the city, up from 631,486 in 2016. The Metro Vancouver area had a population of 2.6 million in 2021, making it the third-largest metropolitan area in Canada. Greater Vancouver, along with the Fraser Valley, comprises the Lower Mainland with a regional population of over 3 million. Vancouver has the highest population density in Canada, with over 5,700 inhabitants per square kilometre (15,000/sq mi), and the fourth highest in North America (after New York City, San Francisco, and Mexico City).
Vancouver is one of the most ethnically and linguistically diverse cities in Canada: 49.3 percent of its residents are not native English speakers, 47.8 percent are native speakers of neither English nor French, and 54.5 percent of residents belong to visible minority groups. It has been consistently ranked one of the most liveable cities in Canada and in the world. In terms of housing affordability, Vancouver is also one of the most expensive cities in Canada and in the world. Vancouverism is the city's urban planning design philosophy.
"The Mother of All Demos" was a landmark computer demonstration, named retroactively, of developments by Stanford Research Institute's Augmentation Research Center. It was presented at the Association for Computing Machinery / Institute of Electrical and Electronics Engineers (ACM/IEEE)—Computer Society's Fall Joint Computer Conference in San Francisco, by Douglas Engelbart, on December 9, 1968.
The 90-minute live demonstration featured the introduction of a complete computer hardware and software system called the oN-Line System or, more commonly, NLS, which demonstrated for the first time many of the fundamental elements of modern personal computing, including windows, hypertext, graphics, efficient navigation and command input, video conferencing, the computer mouse, word processing, dynamic file linking, revision control, and a collaborative real-time editor.
The War Memorial Opera House is an opera house in San Francisco, California, United States, located on the western side of Van Ness Avenue across from the west side/rear facade of the San Francisco City Hall.
It is part of the San Francisco War Memorial and Performing Arts Center. It has been the home of the San Francisco Opera since opening night in 1932.
Acapulco de Juárez (Spanish: [akaˈpulko ðe ˈxwaɾes] ), commonly called Acapulco (/ˌækəˈpʊlkoʊ/ AK-ə-PUUL-koh, US also /ˌɑːk-/ AHK-; Nahuatl languages: Acapolco), is a city and major seaport in the state of Guerrero on the Pacific Coast of Mexico, 380 kilometres (240 mi) south of Mexico City. Located on a deep, semicircular bay, Acapulco has been a port since the early colonial period of Mexico's history. It is a port of call for shipping and cruise lines running between Panama and San Francisco, California, United States. The city of Acapulco is the largest in the state, far larger than the state capital Chilpancingo. Acapulco is also Mexico's largest beach and balneario resort city. Acapulco de Juárez, Guerrero is the municipal seat of the municipality of Acapulco, Guerrero.
The city is one of Mexico's oldest beach resorts, coming into prominence in the 1940s through the 1960s as a getaway for Hollywood stars and millionaires. Acapulco was once a popular tourist resort, but due to a massive upsurge in gang violence and homicide numbers since 2014, Acapulco no longer attracts many foreign tourists, and most now only come from within Mexico itself. It is both the ninth deadliest city in Mexico and the tenth-deadliest city in the world as of 2022; the US government has warned its citizens not to travel there. In 2016 there were 918 murders, and the homicide rate was one of the highest in the world: 103 in every 100,000. In September 2018, the city's entire police force was disarmed by the military, due to suspicions that it had been infiltrated by drug gangs.