(Encyclopedia) Encke, Johann FranzEncke, Johann Franzyōˈhän fränts ĕngˈkə [key], 1791–1865, German astronomer. He was assistant (1816–22) and director (1822–25) of the observatory at Seeberg (near…
(Encyclopedia) ProtagorasProtagorasprōtăgˈərəs [key], c.490–c.421 b.c., Greek philosopher of Abdera, one of the more distinguished Sophists. He taught for a time in Athens, where he was a friend of…
(Encyclopedia) Norwegian elkhound, breed of compact hound whose origins in Norway go back more than 5,000 years. It stands about 19 in. (48.3 cm) high at the shoulder and weighs between 40 and 50 lb…
(Encyclopedia) okapiokapiōkăpˈē [key], nocturnal ruminant mammal, Okapia johnstoni, of the giraffe family. It inhabits the almost sunless rain forests of the upper Congo and feeds on leaves. Its…
(Encyclopedia) tepee or tipitepeeboth: tēˈpē [key], typical dwelling of Native North Americans living on the Great Plains. It was usually made by arranging tent poles into a conical frame and…
Notable Explorers Christopher Columbus See also Columbus and Other Explorers Notable Women Adventurers People in the NewsRecent Obituaries Related Links Quiz:…
Christopher Columbus
See also Columbus and Other Explorers Notable Women Adventurers People in the News Recent Obituaries
Related Links Quiz: Explorers Quiz: Women…
AURORASLAYERS OF THE ATMOSPHEREOZONE LAYERFIND OUT MOREPRESSURE SYSTEMSThe Earth would be as lifeless as the Moon without the atmosphere – a blanket of gases surrounding the planet and…
Water on Mars The scientific community was intrigued by the startling announcement in June 2000 that some high-resolution images of Mars taken by the Mars Global Surveyor showed strong evidence of…
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