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Isle Royale National Park

(Encyclopedia)Isle Royale National Park roiˈəl [key], 571,790 acres (231,575 hectares), comprising about 200 islands, in Lake Superior, NW Mich.; est. 1940. Isle Royale, 210 sq mi (544 sq km), is the largest isla...

Banks, Dennis James

(Encyclopedia)Banks, Dennis James, 1937–2017, Native American civil-rights activist, b. Leech Lake Reservation, Minn. Of Ojibwa (Chippewa) heritage, he helped found the American Indian Movement (1968) to fight fo...

Chase, Mary Ellen

(Encyclopedia)Chase, Mary Ellen, 1887–1973, American educator and writer, b. Blue Hill, Maine, grad. Univ. of Maine, 1909. Her works, set in Maine and excellent in their regional fidelity, include a biography and...

anglesite

(Encyclopedia)anglesite ăngˈgləsīt [key], pale green, blue, yellow-to-white, or colorless mineral, a sulfate of lead, PbSO4, that is formed by oxidation of galena, crystallizing in the orthorhombic system and o...

aquamarine

(Encyclopedia)aquamarine ăkˌwəmərēnˈ, äkˌ– [key] [Lat.,=seawater], transparent beryl with a blue or bluish-green color. Sources of the gems include Brazil, Siberia, the Union of Myanmar, Madagascar, and p...

Willstätter, Richard

(Encyclopedia)Willstätter, Richard rĭkhˈärt vĭlˈshtĕtər [key], 1872–1942, German chemist. He was professor at the Kaiser Wilhelm Institute of Chemistry, Berlin (1912–16), and at the Univ. of Munich (191...

Tana, lake, Ethiopia

(Encyclopedia)Tana tsäˈnä [key], largest lake of Ethiopia, c.1,400 sq mi (3,630 sq km), S of Gondar. It is fed by more than 60 streams, one of which is regarded as the source of the Blue Nile. The islands in the...

mandrill

(Encyclopedia)mandrill, large monkey, Mandrillus sphinx, of central W Africa, related to the baboons. Mandrills are found in forests, while baboons live in open country. The fur of the mandrill is mostly dark brown...

parakeet

(Encyclopedia)parakeet or parrakeet, common name for a widespread group of small parrots, native to the Indo-Malayan region and popular as cage birds. Parakeets have long, pointed tails, unlike the chunky lovebirds...

bowerbird

(Encyclopedia)bowerbird, common name for any of several species of birds of the family Ptilonorhynchidae, native to Australia and New Guinea, which build, for courtship display, a bower of sticks or grasses. Usuall...