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Independence, American War of

(Encyclopedia)Independence, American War of: see American Revolution. ...

Area 51

(Encyclopedia)Area 51, name for a U.S. military site, S Nev., c.80 mi (130 km) NNW of Las Vegas. Shrouded in secrecy since the mid-20th cent., it is located within the U.S. Air Force's enormous Nevada Test and Trai...

Niflheim

(Encyclopedia)Niflheim nēˈfəlhīmˌ [key], in Norse mythology, lowest region of the underworld. A land of mist and cold, Niflheim was sometimes called the home of the dead. See also Hel. ...

Seward Peninsula

(Encyclopedia)Seward Peninsula, W Alaska, projecting c.200 mi (320 km) into the Bering Sea between Norton Sound and Kotzebue Sound, just below the Arctic Circle. The region is mostly bleak tundra, with long, cold w...

Carpathians

(Encyclopedia)Carpathians kärpāˈthēənz [key] or Carpathian Mountains, Czech, Pol., and Ukr. Karpaty, Rom. Carpaţii, major mountain system of central and E Europe, extending c.930 mi (1,500 km) along the north...

Portuguese man-of-war

(Encyclopedia)Portuguese man-of-war: see jellyfish; polyp and medusa. ...

Beaver Falls

(Encyclopedia)Beaver Falls, city (2020 pop. 8,232), Beaver co., W Pa., on falls of the Beaver River near its junction with the Ohio; settled c.1793, inc. 1868. The ci...

humidity

(Encyclopedia)humidity, moisture content of the atmosphere, a primary element of climate. Humidity measurements include absolute humidity, the mass of water vapor per unit volume of natural air; relative humidity (...

Korean War Veterans Memorial

(Encyclopedia)Korean War Veterans Memorial: see National Parks and Monuments (table)national parks and monuments (table). ...

World War II Memorial

(Encyclopedia)World War II Memorial: see National Parks and Monuments (table)national parks and monuments (table). ...