Columbia Encyclopedia

Search results

500 results found

drone

(Encyclopedia)drone or remotely piloted vehicle, a pilotless craft guided by remote control. Aircraft, ships, and land vehicles can be designed or outfitted as drones. Underwater vessels—both piloted and pilotles...

Anthropocene

(Encyclopedia)Anthropocene Epoch, an unofficial term used by scientists to describe a period of time—up to the present—in which humanity has impacted the planet on a global scale. The phrase was fir...

genetic engineering

(Encyclopedia)CE5 Genetic engineering: Gene-splicing techniques genetic engineering, the use of various methods to manipulate the DNA (genetic material) of cells to change hereditary traits or produce biologica...

plague

(Encyclopedia)plague, any contagious, malignant, epidemic disease, in particular the bubonic plague and the black plague (or Black Death), both forms of the same infection. These acute febrile diseases are caused b...

tiger

(Encyclopedia)tiger, large carnivore of the cat family, Panthera tigris, found in the forests of Asia. There are six subspecies of P. tigris: Amur or Siberian, Sumatran, Malayan, North Indochinese, Bengal, and Sout...

Charles V, Holy Roman emperor

(Encyclopedia)Charles V, 1500–1558, Holy Roman emperor (1519–58) and, as Charles I, king of Spain (1516–56); son of Philip I and Joanna of Castile, grandson of Ferdinand II of Aragón, Isabella of Castile, Ho...

Darfur

(Encyclopedia)Darfur därˈfo͞or [key], region and former sultanate, W Sudan. The region is mountainous, dominated by the central massif of Jebel Marra, which rises to 10,130 ft (3,088 m). Much of the terrain is d...

Charles VII, king of France

(Encyclopedia)Charles VII (Charles the Well Served), 1403–61, king of France (1422–61), son and successor of Charles VI. His reign saw the end of the Hundred Years War. Although excluded from the throne by the ...

Federal Bureau of Investigation

(Encyclopedia)Federal Bureau of Investigation (FBI), division of the U.S. Dept. of Justice charged with investigating all violations of federal laws except those assigned to some other federal agency. The FBI has j...

Ferdinand I, Holy Roman emperor

(Encyclopedia)Ferdinand I, 1503–64, Holy Roman emperor (1558–64), king of Bohemia (1526–64) and of Hungary (1526–64), younger brother of Holy Roman Emperor Charles V. Brought up in Spain, he was expected to...