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SETI

(Encyclopedia)SETI sĕtˈē [key] [Search for ExtraTerrestrial Intelligence], name given to a series of independent programs to detect radio signals from civilizations beyond the solar system. Modern SETI efforts c...

pigmentation

(Encyclopedia)pigmentation, name for the coloring matter found in certain plant and animal cells and for the color produced thereby. Pigmentation occurs in nearly all living organisms. Almost all plants synthesize ...

photosynthesis

(Encyclopedia)photosynthesis fōˌtōsĭnˈthəsĭs [key], process in which green plants, algae, and cyanobacteria utilize the energy of sunlight to manufacture carbohydrates from carbon dioxide and water in the pr...

roof

(Encyclopedia)roof, overhead covering of a building with its framework support. Various methods of construction, such as are suited to different climates, have diversified exterior and interior architectural effect...

Menominee, indigenous people of North America

(Encyclopedia)Menominee mənŏmˈənē [key], indigenous people of North America whose language belongs to the Algonquian branch of the Algonquian-Wakashan linguistic stock (see Native American languages). Also cal...

Mammoth Cave National Park

(Encyclopedia)Mammoth Cave National Park, 52,830 acres (21,396 hectares), central Kentucky, authorized 1926, est. 1941. Located in a hilly, forested region, it offers numerous outdoor activities. It is the site of ...

mango

(Encyclopedia)mango măngˈgō [key], evergreen tree of the Anacardiaceae (sumac family), native to tropical E Asia and now grown in both hemispheres. The chief species, Mangifera indica, is believed to have been c...

National Science Foundation

(Encyclopedia)National Science Foundation (NSF), an independent agency in the executive branch of the U.S. federal government concerned with promoting a national science policy by supporting basic research and educ...

Greene, Evarts Boutell

(Encyclopedia)Greene, Evarts Boutell ĕvˈərts, bo͞otĕlˈ [key], 1870–1947, American historian, b. Kobe, Japan, where his parents were missionaries, grad. Harvard (B.A., 1890; Ph.D., 1893). He began teaching A...

Greenfield

(Encyclopedia)Greenfield <1> City (2020 pop. 18,937), Monterey co., SW Calif.; inc. 1947. Thirty-three miles SE of Salinas, the town was originally founded in 1...