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Juan Fernández

(Encyclopedia) Juan FernándezJuan Fernándezhwän fārnänˈdās [key], group of small islands, S Pacific, c.400 mi (640 km) W of Valparaiso, Chile. They belong to Chile and are constitutionally a special…

New York Times Company v. Sullivan

(Encyclopedia) New York Times Company v. Sullivan, case decided in 1964 by the U.S. Supreme Court. In 1960, the Times ran a fundraising advertisement signed by civil-rights leaders that criticized,…

DK Science: Genetics

LOCATION OF CHROMOSOMES CHROMOSOME STRUCTURE DNA DOUBLE HELIX CHROMOSOME SET GENES INHERITANCE FIND OUT MORE Genetics is the study of the instructions, contained in cells, for how our…

Hall, Jeffrey Connor

(Encyclopedia) Hall, Jeffrey Connor, 1945–, American geneticist, b. Brooklyn, N.Y., Ph.D. Univ. of Washington, Seattle, 1971. Hall was a professor at Brandeis Univ. from 1974 to 2008; he also taught…

The Supreme Court and Federalism

The framers of the Constitution sought to balance the rights of the several states and the powers of the new federal government. Their solution was a federal system, which divides powers between the…

DK Nature: Cells

ARE THERE DIFFERENT TYPES OF CELLS IN THE SAME ORGANISM? HOW DO PLANT AND ANIMAL CELLS DIFFER? GENESFIND OUT MOREThe tiniest living unit that exists is a cell. Cells are the building blocks of all…

DK Science: Genetically Modified Crops

MOVING GENESCARRIERS OF GENESIMPROVING SHELF LIFEFIND OUT MOREPlant crops provide us with food, clothing, and many other important products. Farmers select seeds from the best plants to grow…

Changing Views of Free Speech in the U.S.

Many Americans, including many who supported the new Constitution, criticized the document because it lacked a bill of rights—a listing of the basic rights held by people against the new national…