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Pew Charitable Trusts
(Encyclopedia) Pew Charitable Trusts, philanthropic foundation established (1948) by the children of Sun Oil Company founder Joseph N. Pew (1886–1963) of Philadelphia to provide funds for “general…cellular telephone
(Encyclopedia) cellular telephone or cellular radio, telecommunications system in which a portable or mobile radio transmitter and receiver, or “cellphone,” is linked via microwave radio frequencies…net neutrality
(Encyclopedia) net neutrality, the principle or requirement that Internet service providers (ISPs) allow equal access to all Internet content. The issue of insuring net neutrality has become of…aging
(Encyclopedia) aging, in biology, cumulative changes in an organism, organ, tissue, or cell leading to a decrease in functional capacity. In humans, aging is associated with degenerative changes in…pamphlet
(Encyclopedia) pamphlet, short unbound or paper-bound book of from 64 to 96 pages. The pamphlet gained popularity as an instrument of religious or political controversy, giving the author and reader…prostaglandin
(Encyclopedia) prostaglandinprostaglandinprŏsˌtəglănˈdən [key], any of a group of about a dozen compounds synthesized from fatty acids in mammals as well as in lower animals. Prostaglandins are…waterway
(Encyclopedia) waterway, natural or artificial navigable inland body of water, or system of interconnected bodies of water, used for transportation, may include a lake, river, canal, or any…sudden infant death syndrome
(Encyclopedia) sudden infant death syndrome (SIDS) or crib death, sudden, unexpected, and unexplained death of an apparently healthy infant under one year of age (usually between two weeks and eight…defoliant
(Encyclopedia) defoliant, any one of several chemical compounds that, when applied to plants, can alter their metabolism, causing the leaves to drop off. In agriculture defoliants are used to…fluoridation
(Encyclopedia) fluoridationfluoridationfl&oobreve;rˌĭdāˈshən [key], process of adding a fluoride to the water supply of a community to preserve the teeth of the inhabitants. Tooth enamel…Trending
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