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breast cancer

(Encyclopedia)breast cancer, cancer that originates in the breast. Breast cancer is the second leading cause of cancer death in women (following lung cancer). Although the vast majority of the cases occur in women,...

Missouri, river, United States

(Encyclopedia)Missouri, river, c.2,565 mi (4,130 km) long (including its Jefferson-Beaverhead-Red Rock headstream), the longest river of the United States and the principal tributary of the Mississippi River. The l...

Gothic architecture and art

(Encyclopedia)Gothic architecture and art, structures (largely cathedrals and churches) and works of art first created in France in the 12th cent. that spread throughout Western Europe through the 15th cent., and i...

art conservation and restoration

(Encyclopedia)art conservation and restoration, the preservation of structurally sound works of art, the halting of processes that lead to the damage of works of art, and the repair of already damaged works of art....

Communist party, in China

(Encyclopedia)Communist party, in China, ruling party of the world's most populous nation since 1949 and most important Communist party in the world since the disintegration of the USSR in 1991. After the People'...

Palestinian Authority

(Encyclopedia)Palestinian Authority (PA) or Palestinian National Authority, interim self-government body responsible for areas of the West Bank and Gaza Strip under Palestinian control. The terrritory is officially...

space medicine

(Encyclopedia)space medicine, study of the medical and biological effects of space travel on living organisms. The principal aim is to discover how well and for how long humans can withstand the extreme conditions ...

Bush, George Herbert Walker

(Encyclopedia)Bush, George Herbert Walker, 1924–2018, 41st President of the United States (1989–93), b. Milton, Mass., B.A., Yale Univ., 1948. Bush's handling of domestic affairs was less successful. The savi...

Chad

(Encyclopedia)CE5 Chad chăd, chäd [key], officially Republic of Chad, republic (2020 est. pop. 16,425,864), ...

protein

(Encyclopedia)protein, any of the group of highly complex organic compounds found in all living cells and comprising the most abundant class of all biological molecules. Protein comprises approximately 50% of cellu...