long-lived waste
71Venezuela — Venezuelan, adj., n. /ven euh zway leuh, zwee /; Sp. /be ne swe lah/, n. a republic in N South America. 22,396,407; 352,143 sq. mi. (912,050 sq. km). Cap.: Caracas. * * * Venezuela Introduction Venezuela Background: Venezuela was one of the three …
72chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… …
73Breeder reactor — Assembly of the core of Experimental Breeder Reactor I in Idaho, 1951 A breeder reactor is a nuclear reactor that generates more fissile material in fuel than it consumes.[1] These reactors are considered appealing due to their superior fuel… …
74Overfishing — Atlantic cod stocks were severely overfished in the 1970s and 1980s, leading to their abrupt collapse in 1992 Overfishing …
75Evolution of ageing — Enquiry into the evolution of ageing aims to explain why almost all living things weaken and die with age. There is not yet agreement in the scientific community on a single answer. The evolutionary origin of senescence remains a fundamental… …
76aging — ag·ing (āʹjĭng) n. 1. The process of growing old or maturing. 2. An artificial process for imparting the characteristics and properties of age. * * * Gradual change in an organism that leads to increased risk of weakness, disease, and death. It… …
77energy — /en euhr jee/, n., pl. energies. 1. the capacity for vigorous activity; available power: I eat chocolate to get quick energy. 2. an adequate or abundant amount of such power: I seem to have no energy these days. 3. Often, energies. a feeling of… …
78Victoria — /vik tawr ee euh, tohr /; for 3 also Sp. /beek taw rddyah/, n. 1. the ancient Roman goddess of victory, identified with the Greek goddess Nike. 2. 1819 1901, queen of Great Britain 1837 1901; empress of India 1876 1901. 3. Guadalupe /gwahd l oohp …
79Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …
80IPCC Fourth Assessment Report — IPCC Assessment reports: First (1990) 1992 sup. Second (1995) Third (2001) Fourth (2007) …
