Includes bibliographical references.

International trade : which countries have a Communist or Socialist system of government? -- Regional conflict : what are the major regional conflicts in the world today? -- Modern technology : what are the newest information technology products on the market? -- Economic conditions : which are the seven richest countries in the world? -- Scientific research : how many hours of sleep should a person get every night? -- Global epidemics : what major epidemics have devastated societies throughout history? -- Corporate reform : which major global corporations have been accused of unethical procedures? -- World hunger : how many people in the world suffer from hunger? -- Gender equality : which countries deny women their civil and human rights? -- The digital divide : which country has the largest number of Internet users? -- Immigration policy : should the United States revise its immigration laws? -- Social inequality : what cities in the world have the highest crime rates? -- Cultural heritage : which archaeological sites throughout the world have been designated as World Heritage sites by the United Nations Educational, Scientific, and Cultural Organization (UNESCO)? -- Intellectual property : what is the meaning of the word plagiarism?