An examination of the Earth's ecology that discusses conservation, classification, geography, social organization of plants, sociobiology, environmentalism, and other related topics; and provides information on related scientists and personalities.
An exploration of the roles of African-Americans during the Civil War that describes how free blacks and ex-slaves volunteered to fight in over four hundred battles, despite prejudices and unfair treatment.
Tells the life story of Mary Eliza Mahoney, the first professional African-American nurse in the U.S., and discusses the development of the National Association of Colored Graduate Nurses and the advances made and challenges faced by African-Americans in nursing since.
A five-volume series that chronicles race relations in the United States throughout the twentieth century involving various ethnic groups including African, Native, and Asian Americans, Latinos, and Jewish Americans.
Contains alphabetically arranged entries that provide information on key principles, laws, theories, hypotheses, and concepts in the history of the natural sciences, including physics, chemistry, biology, astronomy, geology, and mathematics.
Contains twenty-three essays that examine aspects of the Eighteenth and Twenty-first Amendments to the U.S. Constitution, providing historical background, looking at their influence on constitutional law, and discussing their relevance in the twenty-first century.
A collection of sixteen controversial essays by such noted persons as Martin Luther King, Jr., James R. Doolittle, Frederick Douglass, and Earl Warren, who debate issues concerning the Fifteenth Amendment and who should be entitled to vote.
Provides historical background information about the Nineteenth Amendment, which provided voting rights to women, and includes essays that debate issues associated with women's rights.
Contains fifteen articles that examine aspects of the Fourteenth Amendment to the U.S. Constitution, providing historical background, looking at test cases, and reviewing modern-day due process issues.
A series of controversial essays that debate issues associated with the Twelfth Amendment and the Presidential election process, including issues concerning the electoral college and other court cases related to the Twelfth Amendment.
