American industrialist and philanthropist, founder of the Standard Oil Company, which dominated the oil industry and was the first great U.S. business trust.
American philanthropist, the only son of John D. Rockefeller, Sr., and heir to the Rockefeller fortune, who built Rockefeller Center in New York City and was instrumental in the decision ...
41st vice president of the United States (1974-77) in the Republican administration of President Gerald Ford, four-term governor of New York (1959-73), and leader of the liberal wing of the ...
U.S. industrialist and financier known, in conjunction with his older brother, John D. Rockefeller, for his role in the establishment and growth of the Standard Oil Company.
any of a type of jet-propulsion device carrying either solid or liquid propellants that provide both the fuel and oxidizer required for combustion. The term is also commonly applied to ...
pioneer railway locomotive built by the English engineers George and Robert Stephenson. Following the success of the Stockton & Darlington Railway in 1825, the cities of Liverpool and Manchester decided ...
any of a type of jet-propulsion device that carries either solid or liquid propellants that provide both the fuel and oxidizer required for combustion. The term is also commonly applied ...
any of the 90 species of the genus Sisymbrium, of the mustard family (Brassicaceae), weedy plants with yellow flowers that are common in waste areas and fields of the Northern ...
city, seat (1836) of Winnebago county, northern Illinois, U.S. It lies on the Rock River, about 90 miles (145 km) northwest of Chicago. Rockford was founded by New Englanders in ...
either of the two species of western African birds, genus Picathartes, constituting the subfamily Picathartinae, of uncertain family relationships in the order Passeriformes. Both species, with virtually no feathering on ...
city and commercial centre for a large part of central Queensland, Australia, at the head of ocean navigation on the Fitzroy River, 38 mi (60 km) upstream from its mouth ...
county, extreme southeastern New Hampshire, U.S. It is bordered by Massachusetts to the south, the Atlantic Ocean to the east, and Maine and Little and Great bays to the northeast; ...
English earthenware, stoneware, and porcelain made at Swinton, Yorkshire, in a factory on the estate of the Marquess of Rockingham. The pottery was started in 1745, but it was not ...
prime minister of Great Britain from July 1765 to July 1766 and from March to July 1782. He led the parliamentary group known as Rockingham Whigs, which opposed Britain's war ...
county, southeastern New York state, U.S., consisting of a hilly region bordered by the Hudson River to the east and New Jersey to the southwest. Sandstone bluffs known as the ...
city, seat (1860) of Knox county, southern Maine, U.S., on the western shore of Penobscot Bay 81 miles (130 km) northeast of Portland. The site, settled about 1719, was originally ...
American gridiron football coach who built the University of Notre Dame in Indiana into a major power in college football and became the intercollegiate sport's first true celebrity coach.
city, seat (1776) of Montgomery county, west-central Maryland, U.S., a northwestern suburb of Washington, D.C. The settlement originated during the Revolutionary period around Hungerford's tavern and was known first as ...
diversified American corporation that was formerly one of the country's leading aerospace contractors, making launch vehicles and spacecraft for the U.S. space program.
city, Nash and Edgecombe counties, east-central North Carolina, U.S., about 50 miles (80 km) east-northeast of Raleigh. The area was settled in the mid-1700s by Virginians after the war (1711-13) ...
spectacular mountainous region of north-central Colorado, U.S. It lies just west of the town of Estes Park and adjoins Arapaho National Recreation Area, which surrounds two lakes formed by the ...
form of tick-borne typhus first described in the Rocky Mountain section of the United States, caused by a specific microorganism (Rickettsia rickettsii). Discovery of the microbe of Rocky Mountain spotted ...
geological depression extending north-northwest for about 900 miles (1,400 km) from western Montana, U.S., south of Flathead Lake, through British Columbia, Can., to the headwaters of the Yukon River. The ...
mountain range forming the cordilleran backbone of the great upland system that dominates the western North American continent. Generally, the ranges included in the Rockies stretch from northern Alberta and ...
style in interior design, the decorative arts, painting, architecture, and sculpture that originated in Paris in the early 18th century but was soon adopted throughout France and later in other ...
ancient fortress town, Ardennes departement, Champagne-Ardennes region, northeastern France. It lies 4 miles (6 km) from the Belgian frontier. The great bastions surrounding the small town in the form of ...
(May 19, 1643), a military engagement of the Thirty Years' War in which a French army of 22,000 men, under the Duke d'Enghien (later known as the Great Conde), annihilated ...
type of photoreceptive cell in the retina of the eye in vertebrate animals. Rod cells function as specialized neurons in the conversion of visual stimuli in the form of photons ...
old English measure of distance equal to 16.5 feet (5.029 metres), with variations from 9 to 28 feet (2.743 to 8.534 metres) also being used. It was also called a ...
American biochemist who was awarded the 1994 Nobel Prize for Physiology or Medicine for his discovery in the 1960s of natural signal transducers called G-proteins that help cells in the ...
economist who, because of his conservative interpretation of social reform, was instrumental in shaping the Prussian government's regulation of its economy.
American writer and television and film producer, creator and executive producer of the popular science-fiction television series Star Trek (1966-69), which spawned other television series and a string of motion ...
Flemish poet who helped to inspire the late 1870s revival in Flemish literature that was intended to counteract the growing French influence on Belgian cultural life.
any of more than 2,050 living species of mammals characterized by upper and lower pairs of ever-growing rootless incisor teeth. Rodents are the largest group of mammals, constituting almost half ...
any substance that is used to kill rats, mice, and other rodent pests. Warfarin, 1080 (sodium fluoroacetate), ANTU (legal label for alpha-naphthylthiourea), and red squill are commonly used rodenticides. These ...
sport involving a series of contests and exhibitions derived from riding, roping, and related skills developed by cowboys during the era of the range cattle industry in northern Mexico and ...
town, capital of Aveyron departement, Midi-Pyrenees region, and, until 1789, capital of the old district of Rouergue, southern France; it lies at the confluence of the Auterne and Aveyron rivers, ...
American singer and guitarist, one of the principal figures in the emergence of the country and western style of popular music. He was known throughout his musical career as the ...
one of the dominant composers of American musical comedy, known especially for his works in collaboration with the librettists Lorenz Hart and Oscar Hammerstein II.
French sculptor of sumptuous bronze and marble figures, considered by some critics to be the greatest portraitist in the history of sculpture. His La Porte de l'Enfer ...
U.S. inventor of prismatic and perforated-cake gunpowder that burned evenly, providing controlled expansion of gases in a gun rather than a sudden shock that might burst the barrel. He also ...
mountain massif, the highest part of the Eastern Carpathians in Romania, reaching a height of 7,556 ft (2,303 m) at Pietrosu in the northern part of the country. Active glaciers ...
Soviet figure skater who, with her partners, first Alexey Ulanov and later Aleksandr Zaytsev, won 10 successive world championships (1969-78) and three successive Olympic gold medals.
Uruguayan philosopher, educator, and essayist, considered by many to have been Spanish America's greatest philosopher, whose vision of a unified Spanish America inspired his continent. His credo, reformarse es vivir ...
island dependency of the western Indian Ocean state of Mauritius. It lies 344 miles (553 km) east of the island of Mauritius. Of volcanic origin, Rodrigues Island has an area ...
professor, editor, and cultural promoter who was one of the most influential Latin American literary critics of the 20th century. He published books on key literary figures such as Jorge ...
(Capreolus capreolus), Eurasian deer, family Cervidae (order Artiodactyla), found in small family groups in lightly forested regions. When alarmed, the roe deer barks like a dog. A nimble animal, it ...
legal case, decided in 1973 by the U.S. Supreme Court, that held unduly restrictive state regulation of abortion to be unconstitutional. In a 7-2 vote the Supreme Court upheld the ...
diplomat and author who advanced England's mercantile interest in Asia and was prominent in negotiations during the Thirty Years' War. He was knighted in 1604.
German-born U.S. civil engineer, a pioneer in the design of steel suspension bridges. His best known work is the Brooklyn Bridge, New York City, completed under the direction of his ...
U.S. civil engineer under whose direction the Brooklyn Bridge, New York City, was completed in 1883; the bridge was designed by Roebling with his father, John Augustus.
British physician, chemist, and inventor, perhaps best-known for having subsidized the experiments of the Scottish engineer James Watt that led to the development of the first commercially practical condensing steam ...
unit of X radiation or gamma radiation, the amount that will produce, under normal conditions of pressure, temperature, and humidity, in 1 cubic cm (0.001293 gram) of air, an amount ...
