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Kids from Egypt

Continent: North Africa/Middle EastClimate: Hot desert! In summer, temperatures average more than 100 degrees.School: School attendance is required for six years, generally beginning at age six or…

tea

(Encyclopedia) tea, tree or bush, its leaves, and the beverage made from these leaves. The plant (Camellia sinensis, Thea sinensis, or C. thea) is an evergreen related to the camellia and indigenous…

parrot

(Encyclopedia) parrot, common name for members of the order Psittaciformes, comprising nearly 400 species of colorful birds, pantropical in distribution, including the parakeets. Parrots have large…

DK Science & Technology: Color

WHAT IS THE VISIBLE SPECTRUM? WHAT ARE PRIMARY COLORS? HOW MANY COLORS CAN WE SEE? DISPERSIONCOLOR TREEFIND OUT MORELight has different wavelengths, which we see as colors. The range of wavelengths…

Least and Most Polluting Cars, 2006

The ACEEE's Green Book®, a buyer's guide to environmentally friendly passenger vehicles, rates cars according to their emissions and fuel consumption…

obsidian

(Encyclopedia) obsidianobsidianŏbsĭdˈēən [key], a volcanic glass, homogeneous in texture and having a low water content, with a vitreous luster and a conchoidal fracture. The color is commonly black…

Lombardi, Vince

(Encyclopedia) Lombardi, Vince (Vincent Thomas Lombardi), 1913–70, American football coach, b. New York City. As a student at Fordham, he was a member of the famed “Seven Blocks of Granite” line.…

Losey, Joseph

(Encyclopedia) Losey, JosephLosey, Josephlōˈzē [key], 1909–84, American film director, b. La Crosse, Wis. Among his Hollywood works, many of which dealt with social issues, are The Boy With Green…

Magnus, Heinrich Gustav

(Encyclopedia) Magnus, Heinrich GustavMagnus, Heinrich Gustavhīnˈrĭkh g&oobreve;sˈtäf mägˈn&oobreve;s [key], 1802–70, German chemist, physicist, and educator. In 1831 he became lecturer and…