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Port Radium

(Encyclopedia)Port Radium, mining village, N central Northwest Territories, Canada, on Great Bear Lake. The mines were discovered in 1930 and yielded deposits of pitchblende, from which much radium was produced. Du...

Zambezi

(Encyclopedia)Zambezi zămbēˈzē [key], river, c.1,700 mi (2,740 km) long, rising in NW Zambia, S central Africa, and flowing in an S-shaped course generally E through E Angola, along the Zambia-Zimbabwe border, ...

Pleistocene epoch

(Encyclopedia)Pleistocene epoch plīˈstəsēn [key], 6th epoch of the Cenozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table). According to a classification that considered its depos...

Hammond

(Encyclopedia)Hammond. 1 City (2020 pop. 77,879), Lake co., extreme NW Ind., bounded by Lake Michigan, the Ill. state line, and the Little Calumet River, and ...

Community of Christ

(Encyclopedia)Community of Christ, formerly the Reorganized Church of Jesus Christ of Latter Day Saints, religious group that regards itself as the successor of the church founded by Joseph Smith. They organized in...

Agadez

(Encyclopedia)Agadez ägädĕsˈ [key], town, W central Niger, in the Aïr Massif. Agadez is a trade center visited by Tuareg pastoral nomads. Leather and silver handicrafts are ...

Askja

(Encyclopedia)Askja äsˈkyä [key], volcano, c.4,950 ft (1,510 m) high, E central Iceland; one of the highest in Europe. Its great eruption of 1875 devastated a large area; Askja last erupted in 1961. Askja calder...

Calumet, region, United States

(Encyclopedia)Calumet kălˈyo͞omĕtˌ [key], industrialized region of NW Ind. and NE Ill., along the south shore of Lake Michigan. Once a great heavy industry and steel manufacturing center, the area has become l...

Adirondack Mountains

(Encyclopedia)Adirondack Mountains ădˌərŏnˈdăk [key], mountain mass, NE N.Y., between the St. Lawrence valley in the north and the Mohawk valley in the south; rising to 5,344 ft (1,629 m) at Mt. Marcy, the hi...

collagen

(Encyclopedia)collagen kŏlˈəjən [key], any of a group of proteins found in skin, ligaments, tendons, bone and cartilage, and other connective tissue. Cells called fibroblasts form the various fibers in connecti...