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Bering Strait

(Encyclopedia) Bering Strait, c.55 mi (90 km) wide, between extreme NE Asia and extreme NW North America, connecting the Arctic Ocean and the Bering Sea. It is usually completely frozen over from…

blackbird

(Encyclopedia) blackbird, common name in North America of a perching bird allied to the bobolink, the meadow lark, the oriole, and the grackle and belonging to the family Icteridae. The European…

Pleistocene epoch

(Encyclopedia) Pleistocene epochPleistocene epochplīˈstəsēn [key], 6th epoch of the Cenozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table). According to a…

Scudder, Samuel Hubbard

(Encyclopedia) Scudder, Samuel Hubbard, 1837–1911, American entomologist, b. Boston, grad. Williams (B.A., 1857) and Harvard (B.S., 1862). The founder of American insect paleontology and an authority…

Prudhoe Bay

(Encyclopedia) Prudhoe Bay, inlet of the Beaufort Sea and Arctic Ocean, N Alaska, in the Alaska North Slope region, east of the Colville River delta. In 1968 one of the largest oil reserves in North…

gum tree

(Encyclopedia) gum tree, name for the eucalyptus (see myrtle) in Australia and for several other trees, e.g., the sweet gum, of the family Hamamelidaceae (witch hazel family), and the black gum or…

America, in geography

(Encyclopedia) America [for Amerigo Vespucci], the lands of the Western Hemisphere—North America, Central (or Middle) America, and South America. The world map published in 1507 by Martin…

Thunberg, Greta

(Encyclopedia) Thunberg, Greta, 2003–, Swedish climate activist. She came to public notice in 2018 when she encouraged students to skip school on Fridays to protest societal inaction on climate…

sun dance

(Encyclopedia) sun dance, ceremony typical of the Plains Indians of North America. The ceremony was performed in the summer and lasted from two to eight days. Some of the ceremony was secret. Smoking…

sagebrush

(Encyclopedia) sagebrush, name for several species of Artemisia, deciduous shrubs of the family Asteraceae (aster family), particularly abundant in arid regions of W North America. The common…